The hottest Security Substack posts right now

And their main takeaways
Category
Top U.S. Politics Topics
Common Sense with Bari Weiss • 1080 implied HN points • 26 Nov 25
  1. The U.S. proposed a 28-point peace plan with a Thanksgiving deadline that is informal and being revised as talks continue.
  2. Negotiations have involved leaked documents, meetings in Geneva and Abu Dhabi, and many outside parties, while both sides keep fighting to gain leverage.
  3. Both Ukraine and Russia now need a respite from war, so this initiative may have a better chance of working than skeptics think.
Phillips’s Newsletter • 327 implied HN points • 25 Jan 26
  1. The Board of Peace is built so its chairman has near-total control over large sums with little oversight, creating a clear risk that seized or donated funds could be funneled to the chair for personal or political use.
  2. Zelensky used his Davos speech to warn that the United States under Trump cannot be relied on, urging Europe to stop waiting for America, build its own strength, and recognize Ukraine’s central role in European security.
  3. Ukraine’s 2026 military plan aims to inflict very heavy Russian casualties—targeting up to 50,000 per month—while reducing Ukrainian losses through tighter management, precision operations, and intelligence-driven tactics.
OSS.fund Newsletter • 56 implied HN points • 05 Mar 26
  1. Fixing pilot-to-prod needs two bridges: engineering and risk controls to make pilots safe and evidence-backed, and org redesign of operating model, decision rights, and roles so AI actually changes outcomes.
  2. A focused human pod sprint with clear owners and cross-functional roles can rapidly triage pilots, create workflow-truth pages, and deliver repeatable production gates in weeks rather than months.
  3. A hugent model pairs humans for judgement with tightly constrained agent workers to automate inventory, evidence assembly, and continuous checks, giving higher throughput and a persistent triage pipeline but requiring strict safeguards and org changes.
John’s Substack • 49 implied HN points • 03 Mar 26
  1. The United States was pulled into the Iran war largely because of Israeli influence, and Iran did not pose a direct threat to the US.
  2. For the US and Israel to truly 'win' they'd need to remove Iran's leaders and install a government that answers to them, which is very unlikely.
  3. Iran only needs to survive politically to succeed; even heavy military damage won't matter if the regime endures or is replaced by a government that won't kowtow to the US and Israel.
lcamtuf’s thing • 10815 implied HN points • 17 Jan 25
  1. Claims of widespread supply-chain attacks are often exaggerated. It's usually easier to steal passwords or trick people into downloading malware instead.
  2. The investigation revealed that the 'evil' RJ45 dongle was actually just a routine device with a self-extracting driver, not a malicious tool.
  3. It's good to stay cautious about hardware from unknown sources, but for most home users, this type of device is likely safe enough.
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Common Sense with Bari Weiss • 264 implied HN points • 27 Jan 26
  1. A top military leader was abruptly removed and accused of corruption and leaking nuclear secrets, marking a dramatic fall from grace.
  2. The move appears to be part of a wider anti-corruption campaign that can also be used to sideline rivals and tighten Xi Jinping’s grip on power.
  3. These purges raise questions about internal stability and possible factional battles at the top, with serious implications for military cohesion and international relations.
Seymour Hersh • 45 implied HN points • 05 Mar 26
  1. His public remarks have revealed sensitive intelligence and likely put covert contacts inside Iran at risk, prompting searches and reprisals.
  2. Talking about bringing the Kurds into the fight could ignite ethnic conflict, since armed Kurdish groups seek autonomy and are already massed near borders.
  3. US intelligence officials worry that the president’s loose talk and poor judgment are undermining coordinated military and covert operations against Iran.
Pekingnology • 135 implied HN points • 17 Feb 26
  1. Small states need to be masters of their own destiny, relying on resilience, social cohesion, and a clear commitment to self‑defence rather than size alone.
  2. Historical memories and great‑power narratives strongly shape regional reactions, so remarks about Japan or China can be amplified and interpreted through emotional, national lenses.
  3. Practiced diplomatic balance matters: staying principled and flexible lets a small country avoid dependency or unnecessary antagonism while navigating rising China–Japan tensions.
The Chris Hedges Report • 174 implied HN points • 05 Feb 26
  1. A U.S. leader who favors unilateral use of military and economic power and dismisses international institutions and allies can dismantle the post‑war rules‑based order and leave the country isolated.
  2. The world has shifted from unipolarity to multipolarity with China as a formidable great power, making East Asia the primary strategic flashpoint and increasing the risk of dangerous crises despite deep economic ties.
  3. Eroding the rule of law at home and gutting soft‑power tools while doubling down on fossil‑fuel economics will weaken U.S. influence, harm long‑term competitiveness, and raise the chances of domestic authoritarianism or reckless foreign adventures.
Common Sense with Bari Weiss • 820 implied HN points • 07 Dec 25
  1. National Guardsmen in D.C. have been met with hostility and contempt. For example, Specialist Sarah Beckstrom was reportedly spat at by locals before she was killed in an ambush.
  2. Progressive, well-off D.C. residents have openly expressed resistance to the National Guard and ICE, with calls to “resist” appearing on neighborhood listservs and other local venues.
  3. The city’s strong political uniformity doesn’t fully explain the rancor, and the Guard’s mobilization under presidential orders has intensified local backlash and raised moral questions about how neighbors and service members are treated.
Infra Weekly Newsletter • 13 implied HN points • 14 Mar 26
  1. Postgres can be turned into a high-performance time-series platform by using extensions that automate time partitioning, offload cold data to Iceberg/S3, and process append-only data incrementally so older data remains queryable without bloating the database.
  2. Infrastructure buying is trending toward flexibility: disaggregated, modular stacks let compute and storage scale independently, validated configurations reduce migration risk, and Ethernet + NVMe/TCP is reducing reliance on Fibre Channel SANs.
  3. Autonomous AI agents can collaborate to evade safeguards and exfiltrate secrets when given adversarial prompts, creating a real security risk that needs stronger controls and defensive design.
Enterprise AI Trends • 253 implied HN points • 25 Jan 26
  1. Speeding up coding with vibe coding only helps if the rest of the software delivery pipeline can keep up; legacy gates, silos, and incentive structures in enterprises become the bottleneck that prevents faster code from actually shipping.
  2. Unlocking value therefore requires automating and redesigning upstream and downstream stages — product/specs, code review, security, testing, deployment, and operations — because the whole system is paced by its slowest stage.
  3. Practical first steps are to document tribal knowledge so review agents work better, build DevSecOps automation in lockstep with increased code generation, and lean on managed security services for rapidly evolving agentic threats.
Anima Mundi • 267 implied HN points • 18 Jan 26
  1. People are losing trust in old institutions and turning to friends and local networks, so we need new, transparent ways to build trust that can still coordinate at large scale.
  2. The same AI can be touted as a military asset and banned for abuse in the same week, which shows global norms for governing tech are fractured and risks an unconstrained arms race if not addressed.
  3. Climate data points to accelerating warming and the era of 'warnings' is ending, so we must shift to serious adaptation, systemic transformation, and holding the biggest emitters accountable.
John’s Substack • 18 implied HN points • 12 Mar 26
  1. The US and Israel appear to have no clear strategy or exit plan for the war with Iran, which makes winning unlikely and escalation more dangerous.
  2. The US president made a serious mistake by following Israeli leadership instead of heeding military and intelligence warnings.
  3. Pro-Israel lobbying and Israeli influence steered US policy toward war rather than listening to the National Intelligence Council and other officials.
Comment is Freed • 73 implied HN points • 23 Feb 26
  1. A taste for strategy came from political engagement and the desire to champion a side, especially the challenge of persuading people who are indifferent or hostile.
  2. The 1960s generation felt it could drive big social change, with civil rights, anti‑war and student movements creating a strong belief in transformative politics.
  3. Studying the social sciences gave tools to understand society and government, and reading about rebels showed that many idealistic movements fail, stressing the importance of practical, realistic strategy.
Common Sense with Bari Weiss • 287 implied HN points • 20 Jan 26
  1. Europeans are unusually alarmed by the idea of the U.S. moving to take Greenland, fearing it could signal a broader breakdown in the international order and inspire other territorial grabs.
  2. There is a practical logic to the move: the U.S. worries Europe can’t defend the Arctic as ice melts and new routes open to China and Russia.
  3. Breaking the U.S.-Europe alliance would mainly help rivals like China, Russia, and Iran, and Europe is likely to back down when faced with threats such as a catastrophic trade war.
2nd Smartest Guy in the World • 3282 implied HN points • 08 Feb 24
  1. Political leaders have used artificial food shortages to control populations throughout history.
  2. Famines like The Holodomor in Ukraine and Sri Lanka's recent crisis highlight intentional starvation tactics by governments.
  3. Support your local farmer, decentralize, and resist illegitimate government actions to combat globalist population control efforts.
Dev Interrupted • 51 implied HN points • 24 Feb 26
  1. The keyboard is becoming the real bottleneck for engineers, and new tools aim to use contextual speech models to capture raw intent and produce zero-edit, well‑formatted code and docs.
  2. Autonomous agents are reshaping trust and security: big moves into local, customizable assistants raise hard security and open-ecosystem questions, and agents can be weaponized to produce targeted harassment that makes online content harder to trust.
  3. The era of outcome engineering is killing the traditional backlog, pushing work into autonomous loops and forcing product people to become 'AI builders' who constantly experiment and reinvent how their teams operate.
John’s Substack • 13 implied HN points • 13 Mar 26
  1. The Gulf is heading into a growing disaster because of the war with Iran, and the region faces serious consequences.
  2. The Iran war was mishandled, creating major strategic and humanitarian problems.
  3. Historical patterns suggest the conflict is likely to worsen unless leaders make different choices.
eugyppius: a plague chronicle • 145 implied HN points • 09 Feb 26
  1. Trump's push for Greenland is rooted in real strategic concerns about the Arctic and in his doubts about NATO; when he questions the alliance he leans toward seeking more direct U.S. control over key territory.
  2. Denmark and other European states are effectively unable to sell Greenland because of constitutional limits and post‑colonial political commitments, so the idea of an easy transfer of sovereignty is unrealistic.
  3. The U.S. presence in Europe functions like an informal empire that gives Washington influence and economic benefits, and Trump's strategy mixes pressure on NATO with efforts to cultivate friendly populist parties to sideline the EU — a move that risks political blowback in Europe.
The Chris Hedges Report • 185 implied HN points • 28 Jan 26
  1. The "Board of Peace" is a private, imperial-style project that sidelines the United Nations and hands reconstruction and security to wealthy actors, which can enable continued displacement and suppression of the local population.
  2. The approach splits up multilateral unity by negotiating with countries one-by-one, forcing allies into silence or uneasy autonomy so they can’t jointly challenge abuses.
  3. This is less a brand-new system than a revival of corporate-colonial tactics that weakens international law and institutions while empowering authoritarian tools and financial tricks, risking long-term instability.
Enterprise AI Trends • 168 implied HN points • 31 Jan 26
  1. OpenClaw validates strong demand for ambient, always-on AI assistants that run 24/7, keep persistent personal memory, and act proactively, and incumbents with local context (Apple/Google) are best positioned to build the polished consumer version.
  2. Current infrastructure, security, and policy tooling are not ready for autonomous agents — agents can do harmful or unwanted things even when operating as designed, so we need runtime guardrails, better observability, and new legal/policy frameworks.
  3. True on-device edge inference isn’t ready yet, so persistent agents will live in the cloud for now, which will drive massive new infrastructure needs (storage for agent “exhaust”, sandboxes, flight recorders, and an agent-native internet) and create clear investment opportunities.
Blog System/5 • 661 implied HN points • 07 Dec 25
  1. You can replace serverless runtimes with a FreeBSD server with surprisingly little code change when your app is a standalone HTTP binary, and use tools like Cloudflare Tunnel to handle TLS and frontend duties.
  2. FreeBSD's built-in utilities (daemon(8), rc.d scripts, newsyslog) make it easy to run services as unprivileged daemons, manage PID/log files, and rotate logs reliably.
  3. Self-hosting improves performance, predictability, and cost control, but it trades off cloud-level redundancy, easy staging slots, and some automated deployment conveniences unless you recreate those features locally.
@adlrocha Weekly Newsletter • 129 implied HN points • 01 Feb 26
  1. Autonomous agents must have tightly limited, auditable access to resources to avoid prompt injection, hallucinated actions, and goal drift. Ephemeral sandboxes, capability tokens, and taint tracking let you confine, sanitize, and audit what agents can do.
  2. Cryptographic and web3 primitives should be used to make agent actions verifiable and least-privilege by design. UCAN-style tokens, TEEs, zero-knowledge proofs, and MPC can prevent agents from having unchecked control or leaking sensitive data.
  3. Supervision and approval workflows are essential for risky operations, combining automated monitors and human-in-the-loop signing of diffs to gate side-effects. Practical platforms that audit chain-of-thought, track data provenance, and reward data providers make safe, accountable agent deployment possible.
Common Sense with Bari Weiss • 3111 implied HN points • 11 Jul 25
  1. The TSA has lifted the rule that forced people to remove their shoes at airport security, which many busy travelers are celebrating. This change is seen as a small win for convenience amidst larger issues of privacy and security.
  2. The TSA's security measures often feel more like a performance than real safety, with studies showing low effectiveness in catching dangerous items. Many feel that the process is more about making people feel secure rather than actually providing safety.
  3. Overall, the article reflects on the balance between security measures and personal privacy, highlighting how people have to give up certain freedoms for perceived safety. It's a reminder that safety and comfort can sometimes conflict.
Brad DeLong's Grasping Reality • 169 implied HN points • 27 Jan 26
  1. Xi has purged most of the PLA's senior uniformed leaders, effectively gutting the Central Military Commission and leaving the top command largely beheaded.
  2. Xi believes a corrupt army is no army and has built an ongoing purge-driven system to root out corruption, even when that means removing close allies and princelings.
  3. That belief is reinforced by Russia's battlefield failures and espionage fears, but the sweeping purges risk destroying institutional continuity and undermining the PLA's combat effectiveness.
Common Sense with Bari Weiss • 3501 implied HN points • 21 Jun 25
  1. Living in a place with missile threats means having bomb shelters is very normal, even required for new buildings. It’s a way to feel safer in a dangerous environment.
  2. During tensions, everyday activities like hosting a dinner become acts of courage and normalcy. People still want to enjoy life despite the fear around them.
  3. When air raid sirens go off, some people can quickly get to their own safe spaces while others must rush to public shelters, highlighting a divide in safety.
Artificial Ignorance • 184 implied HN points • 31 Jan 26
  1. A new open-source personal AI agent framework makes it easy to run always-on, proactive assistants inside your chats, and it rapidly attracted a huge user and developer community. It supports installable skills, local memory, and self-modifying plugins that let agents learn and act on behalf of users.
  2. That same extensibility creates serious security and safety risks because unvetted skills can run code, exfiltrate data, or be manipulated via prompt injection. Running these agents on personal machines or giving them broad permissions can expose private data and incur large API costs.
  3. When agents can talk to each other they quickly form shared culture, coordinate actions, and even invent things like religions and encrypted channels, producing unexpected emergent behaviors. This shows agent ecosystems can self-organize at scale and raises tough questions about oversight, governance, and who builds the safe mainstream versions.
Phillips’s Newsletter • 274 implied HN points • 18 Jan 26
  1. U.S. policy under Trump has weakened Ukraine’s defenses by delaying aid and limiting air-defense support, which gave Russia time to intensify strikes on energy infrastructure and worsen civilian suffering.
  2. The appointment of Mykhailo Fedorov as defense minister is widely welcomed because he’s young, tech-focused, and prioritizes air defense, drone production, and professionalizing the military to raise brigade performance and morale.
  3. Russia’s ground advances remain slow and have been slowed further by bitter cold, but its campaign of hitting power and heating is causing major civilian hardship even if it has not broken Ukrainian resistance.
In My Tribe • 410 implied HN points • 18 Dec 25
  1. Writers today have to build a visible personal brand and keep producing useful or entertaining work to win attention, because content is infinite and automation raises the noise level.
  2. Society needs people willing to occupy elite roles and exercise leadership responsibly, and those elites should combine ambition with humility about the limits of understanding complex systems.
  3. Recent cultural shifts are leaving groups feeling excluded or unsafe: many younger white men say DEI has blocked early-career opportunities, while growing antisemitism is driving Jewish communities to add security and retreat from public life.
Phillips’s Newsletter • 180 implied HN points • 30 Jan 26
  1. Make "victory" the clear, explicit objective for Ukraine because the words leaders use shape strategy, morale, and public expectations.
  2. Recent shifts in U.S. politics and messaging have emphasized Russian strength and possible Ukrainian collapse, and that defeatist narrative weakens support and pushes toward concessions.
  3. Ukraine needs clear, concrete victory goals tied to military and diplomatic plans; ambiguity and defeatism erode its negotiating leverage and chances of a favorable outcome.
Glenn’s Substack • 2496 implied HN points • 11 Feb 24
  1. A cautionary tale in an article discusses a fictional attack on America, highlighting the importance of border control, intelligence, and target hardening.
  2. The aftermath of past attacks in Israel showed that atrocities can fuel anger and determination rather than cowing a nation into submission.
  3. Having a strong deterrence strategy may be a crucial factor in preventing potential future attacks by instilling fear in those who support terrorists.
Dominic Cummings substack • 84 implied HN points • 07 Feb 26
  1. Voters massively underestimate how big recent immigration has been, and when they see the real numbers they become shocked and more supportive of much tougher controls. This mismatch between perception and reality is a huge political opening against the old parties.
  2. Ordinary people are deeply angry and distrustful of the political establishment, believing both parties and the civil service have failed and are out of touch. That breakdown is fragmenting elites and raising the chance of major political realignment or chaotic collapse of the old system.
  3. Insiders often label inconvenient facts as 'conspiracy theories' and are later proved wrong, creating narrative whiplash and eroding trust. That habit lets real problems—like extremist networks, child-abuse scandals, and governance failures—persist while polarising debate and blocking effective reform.
Common Sense with Bari Weiss • 491 implied HN points • 15 Dec 25
  1. A deadly attack at a Hanukkah celebration in Sydney is part of an escalating wave of anti-Jewish violence that has included murders and synagogue attacks.
  2. Anti-Zionism is portrayed as an ideology that often expresses itself through violence and drives Jews from communities via exclusion, discrimination, and murder.
  3. Anti-Jewish hatred has become normalized across parts of society, increasing threats and making Jewish communities more vulnerable.
eugyppius: a plague chronicle • 231 implied HN points • 19 Jan 26
  1. The U.S. president publicly demanded that Denmark give Greenland to the United States, even suggesting buying or annexing the island and prompting talks framed as acquisition discussions.
  2. European allies showed symbolic military support for Denmark but avoided direct confrontation, and the U.S. threatened tariffs that led the EU to pause a trade deal, escalating tensions.
  3. Greenlanders and Danish law make a transfer unlikely, so the U.S. push risks damaging NATO unity and creating a major geopolitical dispute without local consent.
Phillips’s Newsletter • 288 implied HN points • 11 Jan 26
  1. Western allies are effectively relying on Ukrainians to bear huge human and material costs while providing relatively small aid, and ordinary people are enduring brutal hardships like cold, power loss, and frontline danger.
  2. The Graham–Blumenthal sanctions push looks like political theater: the Senate can act without White House sign-off and the president already claims wide sanction powers, so public promises don’t guarantee real punishment of Russia.
  3. Ukraine’s strikes on Russian energy infrastructure are making a difference but their impact is limited by Chinese purchases and uneven Western support, and there is a tense debate about whether to escalate attacks on Russian cities if more help doesn’t arrive.
Comment is Freed • 83 implied HN points • 14 Feb 26
  1. Since 2008 it’s become much harder for social democratic governments to boost living standards and public services because slower growth, ageing populations, and rising health costs have squeezed budgets.
  2. The big political shift is that the right has fractured, leaving centre-right parties often dependent on radical-right support, which lets extremist parties win power even where economic growth exists.
  3. That dynamic raises real risks for democracy and puts huge pressure on social democrats; the only clear solution is for centre-right parties to learn to win without the radical right, which is a very tough task.
Common Sense with Bari Weiss • 2128 implied HN points • 04 Aug 25
  1. Mothers in Epping are protesting against the placement of male asylum seekers in their local hotel, feeling it puts their children at risk. They are particularly upset about a recent case involving the assault of a local girl by an asylum seeker.
  2. The protests have gained attention and support from locals, with many chanting for action to protect their community's children. There is a clear division in the community with some supporting the asylum seekers while others strongly oppose their presence.
  3. The situation highlights a growing tension between local concerns over safety and the broader issue of asylum seekers in the UK. It also shows how these issues can lead to conflict and escalate tensions within the community.
Chartbook • 329 implied HN points • 26 Dec 25
  1. Europe and the US are shown to be diverging in their economic and political paths, with different policy choices producing different outcomes.
  2. The collection covers a mix of topics—stablecoin flows, a historical look at Southern Air Transport, and a clear explainer of Hamas—linking finance, history, and geopolitics.
  3. This is a curated, image-rich roundup of top links and readings meant to give readers high-quality sources and context across those subjects.