The hottest Security Substack posts right now

And their main takeaways
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Top U.S. Politics Topics

Today's Top 5 HN posts

Top 5 HN Posts of the day • 0 implied HN points • 24 Mar 24
🕹 Technology Security
  1. The top 5 HackerNews posts included information on Linux crisis tools, new Aztec codices, cancer rates under age 50, a small SSH server, and web apps running on a single server.
  2. There were also new job postings for companies like BuildZoom, GoGoGrandparent, Sieve, and CodeCrafters on HackerNews.
  3. The post highlighted a variety of interesting topics and job opportunities for readers to explore further.

Five Lessons From Detection & Response Leaders

Detection at Scale • 0 implied HN points • 26 Sep 22
🕹 Technology Security
  1. Start with high-quality log data to effectively protect what you can see and establish a reliable source during incidents.
  2. Detection teams are adopting software engineering practices to enhance scale and efficiency, promoting continuous improvement and collaboration.
  3. Automated response in security operations is crucial to reduce human error, focus on critical tasks, and evolve from reactive to proactive detection and response.

Film Study: Learning from North Kansas City High basketball game shooting

School Shooting Data Analysis and Reports • 0 implied HN points • 09 Apr 24
🚌 Education Security
  1. After a shooting incident, school officials should analyze security plans and procedures by studying the events similar to how coaches review game film.
  2. Many schools lack specific plans or training for shootings during sports events, highlighting the need for better emergency coordination, notification systems, and radio interoperability.
  3. Security technology like acoustic gunshot detection systems and CCTV image classification software can provide valuable insights, but their effectiveness relies on proper implementation and resolution of cameras.

Gunfire on the Gridiron: 2023 high school football season

School Shooting Data Analysis and Reports • 0 implied HN points • 09 Dec 23
🎾 Sports Security
  1. Gun violence at high school football games is a significant issue, with 40 shootings occurring this season resulting in deaths and injuries.
  2. Regional differences show half of the shootings took place in the South, possibly due to the popularity of football in these areas.
  3. Shootings at school sporting events are not isolated incidents but rather reflect a concerning trend that requires national attention and improved security measures.

What is ‘school security’?

School Shooting Data Analysis and Reports • 0 implied HN points • 28 Jul 22
🚌 Education Security
  1. School security is complex and not as simple as just adding more security measures.
  2. Components of school security include the physical campus, security equipment, procedures and training, and personnel.
  3. Various security equipment and measures for schools have pros and cons, and not all solutions are effective in preventing school shootings.
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Commanding is Not Communicating During Chaotic Incidents

School Shooting Data Analysis and Reports • 0 implied HN points • 22 Jun 18
🇺🇸 U.S. Politics Security
  1. During chaotic incidents, communication is more critical than commanding for effective response.
  2. Establishing an incident communicator role can significantly improve responder communications and coordination during major incidents.
  3. Decentralized command with effective communication is essential for managing complex incidents like shootings, fires, or plane crashes.

Popular Nonsense: Armed Vets in Schools

School Shooting Data Analysis and Reports • 0 implied HN points • 16 Feb 18
🇺🇸 U.S. Politics Security
  1. Suggesting armed veterans as a solution to prevent school violence may seem simple, but it's actually a complex and expensive proposal.
  2. Putting armed veterans in schools would cost billions of dollars annually, larger than many government program budgets, and may not make schools much safer due to their size and layout.
  3. Although many veterans are honorable, statistically, some have been involved in mass shootings, highlighting the potential risks of having armed veterans in schools.

Linux Kernel Flaw, VPN Zero Day, Router, 911 S5, Google leak, Snowflake compromised, Ticketmaster breach.

Secure GenAI • 0 implied HN points • 02 Jun 24
🕹 Technology Security
  1. CISA alerted federal agencies to patch a Linux Kernel flaw by June 20, 2024, to prevent local attackers from gaining privileges and executing code.
  2. A zero-day vulnerability in Check Point VPNs allows remote attackers to steal sensitive credentials starting around April 30, and the flaw is described as 'extremely easy' to exploit.
  3. Snowflake account hacks led to breaches at Santander and Ticketmaster, with hackers using a compromised Snowflake employee's account to access data, urging customers to enable multi-factor authentication for account security.

GPT-4o, Gemini-Flash, Frontier Safety Framework, Scam Detection, EU investigations, Fake ads.

Secure GenAI • 0 implied HN points • 19 May 24
🕹 Technology Security
  1. Google is investing in virtualization technology for Android using Pixel to power ChromeOS, enhancing security.
  2. Google's Gemini Nano feature alerts users about potential phone scams in real-time, aiding in scam detection.
  3. The EU is investigating Meta for child protection issues and has warned Microsoft about non-compliance with the Digital Services Act.

Gradient Flow #24: Robots Are Listening, Funding Updates, Security for the Disoriented

Gradient Flow • 0 implied HN points • 17 Dec 20
🕹 Technology Security
  1. The Data Exchange podcast features discussions on security and privacy in AI, Responsible AI practices, and comparison of time-series databases.
  2. Machine Learning tools and infrastructure topics cover building gigascale ML feature stores, production monitoring architectures, and use of time-series databases.
  3. Funding updates include new startups introducing visual data computing, advancements in metadata management tools, and investments in AI companies like DataRobot.

AI catastrophes and rogue deployments

Redwood Research blog • 0 implied HN points • 03 Jun 24
🕹 Technology Security
  1. Categorizing AI catastrophes based on rogue deployments or lack thereof is crucial for understanding safety measures and potential threats.
  2. Rogue deployments, where safety measures are absent, pose a significant risk as they make causing a catastrophe much easier compared to non-rogue deployments.
  3. Different attacker profiles like scheming AIs, lab insiders, and external attackers play a key role in determining the type and severity of AI-related catastrophes.

Managing catastrophic misuse without robust AI

Redwood Research blog • 0 implied HN points • 07 May 24
🕹 Technology Security
  1. Managing catastrophic misuse of powerful AIs requires strategies to ensure they refuse tasks with potential for harm.
  2. Dealing with bioterrorism misuse may involve creating separate API endpoints, stringent user checks, and monitoring for suspicious activities.
  3. Mitigating large-scale cybercrime with AI may involve monitoring, human auditing, and banning users based on suspicious behavior.

The Future Is Open-Source

Homo Ludens • 0 implied HN points • 29 Sep 19
🕹 Technology Security
  1. The future is open-source, presenting both challenges and opportunities in areas like security, privacy, and technological advancements.
  2. Security is a major concern in the open-source realm, especially with Android devices facing issues like spam, malware, and lack of centralized updates. Solutions like blockchain and better security measures are being explored.
  3. Privacy is crucial in the open-source landscape, with the need for better protection of user data against intrusion by government agencies, criminal entities, and ensuring data remains private and secure.

A day at work

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 23 Oct 20
🕹 Technology Security
  1. Performance reviews can be nerve-wracking but can lead to unexpected surprises, like a promotion
  2. Facing technical challenges at work can be frustrating but also rewarding when solved, like deciphering a cryptogram
  3. Taking breaks, exploring new strategies, and collaborating with teammates are key in problem-solving and personal growth

Advisory: security issues in AWS KMS and AWS Encryption SDKs

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 25 Sep 20
🕹 Technology Security
  1. Security vulnerabilities in AWS KMS and AWS Encryption SDKs included information leakage, ciphertext forgery, and robustness issues.
  2. The vulnerabilities required the release of a new version, 2.0.0, for fixes, highlighting the importance of regularly updating software for security measures.
  3. The vulnerabilities exposed potential attacks related to ciphertext decryption, key replacement, and non-committing property issues, emphasizing the critical need for secure encryption practices.

Trả lời phỏng vấn BBC Việt Ngữ về Bluezone

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 07 Aug 20
🕹 Technology Security
  1. Bluezone is a mobile app that helps with contact tracing for COVID-19 in Vietnam by using Bluetooth Low Energy technology.
  2. The privacy of Bluezone users has been a concern, but recent versions have addressed some security vulnerabilities.
  3. It is important for the government and developers of data-tracking apps like Bluezone to ensure data is only used for pandemic control purposes and establish independent oversight.

Cập nhật về Bluezone

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 03 Aug 20
🕹 Technology Security
  1. Bluezone app has made important security improvements by automatically changing the user ID and stopping collection of Bluetooth Classic addresses.
  2. Only Bluezone developers and the Vietnamese government can gather user information now, ensuring better privacy for users.
  3. It's advised for end users to install Bluezone if they trust the developers and government, while developers should commit to deleting data post-pandemic and enhance data protection measures.

Dùng Bluezone có nguy cơ lộ thông tin như thế nào?

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 28 Apr 20
🕹 Technology Security
  1. Bluezone's major security flaw is its use of a single fixed ID number for each user instead of changing codes like other tracing apps, posing risks of tracking and compromising personal information.
  2. To address this vulnerability, Bluezone should consider pausing the app, revamping the design using expertise from European and American specialists, and following established privacy-conscious tracing solution models.
  3. The privacy risks posed by Bluezone's current design can be mitigated by adopting safer solution methods prevalent in other parts of the world, potentially leading to increased user trust and adoption.

Phản hồi của Bluezone

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 26 Apr 20
🕹 Technology Security
  1. Bluezone fixed the error and provided a response to the author's report.
  2. It is important to understand how Bluetooth works, particularly regarding MAC addresses and the need for randomization to protect user privacy.
  3. Modern smartphone operating systems, like Android and iOS, automatically change Bluetooth addresses for privacy protection.

Cảnh báo: lỗ hổng nghiêm trọng trong ứng dụng Bluezone

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 24 Apr 20
🕹 Technology Security
  1. Bluezone app had serious security vulnerabilities that could compromise user safety and privacy.
  2. The unique ID system used in Bluezone could lead to tracking and exposure of sensitive information, raising concerns about user safety.
  3. The app's requirement for excessive permissions like access to location and storage without appropriate need raised red flags for user privacy.

The Internet of Broken Protocols: Showcase #8

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 16 Oct 19
🕹 Technology Security
  1. Cascading multiple encryption algorithms in a specific order, known as a cascade, may not always improve security as commonly thought.
  2. Analyzing a cascade of MAC and digital signature algorithms can reveal potential vulnerabilities in data protection methods.
  3. Using a combination of GMAC with a digital signature for file integrity may not guarantee security as intended, leading to potential security flaws.

Announcement: Android Jetpack Security library

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 10 May 19
🕹 Technology Security
  1. The Android Jetpack Security library provides APIs to easily encrypt files and shared preferences, enhancing data security for Android apps.
  2. The library offers a drop-in replacement for SharedPreferences and Editor classes, automatically encrypting/decrypting data to strengthen app security.
  3. Leveraging Android Keystore, the library ensures decryption of files or preferences only after user authentication, adding an extra layer of security to sensitive data.

Thư ngỏ gửi Quốc hội về dự thảo luật An Ninh Mạng

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 31 May 18
🌍 World Politics Security
  1. It's important for governments to consult with experts and listen to their opinions when drafting laws like the Cybersecurity Law.
  2. Protecting cybersecurity doesn't mean sacrificing economic development and people's freedom. It's crucial to find a balance that allows businesses to thrive and individuals to maintain their privacy.
  3. National cybersecurity policies should focus on safeguarding critical information systems, respecting individual privacy, and collaborating with experts to enhance cybersecurity measures.

My crypto team is hiring!

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 22 Mar 18
🕹 Technology Security
  1. Google's crypto team is hiring Software Engineer/Security Engineer candidates to work on Tink and Wycheproof projects aimed at improving security for Google and Alphabet products.
  2. Team members help analyze, evaluate, design, and implement cryptosystems, focusing on helping developers use cryptography correctly.
  3. Prefer candidates located in Zurich and the US west coast (Seattle, Sunnyvale, San Francisco) to join the team.

Đăng ký workshop: "Lời khuyên của một hacker: làm sao để tránh bị hack"

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 05 Dec 17
🕹 Technology Security
  1. The workshop aims to provide information and help the community stay safe while using the Internet, avoiding hacks and protecting personal information.
  2. Participants are asked to respect the workshop's goal and not ask questions or bring up topics outside the program's scope.
  3. Despite initial promises of gifts for attendees, delays in logistics mean the gifts may arrive late or after the workshop is concluded, with efforts being made to expedite delivery.

Sài Gòn 2017

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 21 Nov 17
🕹 Technology Security
  1. The author will be giving a keynote presentation on ensuring information security for Google products at a conference in Saigon.
  2. The author is organizing a free workshop in Saigon to teach safe internet usage and privacy protection, with 50 cool prizes to be given to participants.
  3. The author wants to continue an annual tradition of meeting and conversing with students interested in the profession, particularly those at the University of Information Technology (UIT) and neighboring schools.

Công cụ giải mã WannaCry

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 18 May 17
🕹 Technology Security
  1. A simple idea was implemented to find decryption keys in memory, useful for recovering WannaCry-encrypted data without paying ransom.
  2. Decryption keys might still be accessible in memory on Windows XP machines infected with WannaCry that haven't been shut down since the infection occurred.
  3. If unable to recover decryption keys from memory, the alternative is to pay ransom in Bitcoin, negotiate with the attackers, or seek help to purchase Bitcoin for ransom payment.

In the spotlight

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 31 Mar 17
🕹 Technology Security
  1. The author presented at Real World Crypto 2017 in New York for the first time. Although feeling under the weather, the talk was successful and received positive feedback.
  2. Real World Crypto is recognized as a significant and useful crypto conference, attracting around 600 attendees. The author hopes to bring a similar event to Vietnam in the future.
  3. The author shared links to slides and source code related to the conference presentation, offering additional resources for interested readers.

FIDO U2F: công nghệ xác minh hai bước chống phishing

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 30 Aug 16
🕹 Technology Security
  1. FIDO U2F is a two-step verification technology that is safer and easier to use compared to other similar technologies like SMS OTP or RSA SecurID.
  2. The advantages of FIDO U2F include safety, ease of use, open standards, and reasonable pricing.
  3. U2F technology eliminates the need for users to manually check website addresses, providing a technical solution to phishing attacks.

Sự cố Vietcombank, một góc nhìn kỹ thuật

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 16 Aug 16
🕹 Technology Security
  1. Vietcombank encountered a security incident involving a customer's stolen funds, prompting technical analysis and identification of potential attack methods like phishing and exploiting vulnerabilities in the Smart OTP system.
  2. Smart OTP, a feature of Vietcombank, was found to have vulnerabilities that could be exploited by attackers to gain control over customer accounts, highlighting the importance of robust security protocols in online banking systems.
  3. The importance of independent security audits, continuous monitoring, and prompt responsiveness to security reports is crucial for financial institutions like Vietcombank to safeguard customer data and prevent unauthorized access.

The Internet of Broken Protocols: Showcase #4

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 13 Aug 16
🕹 Technology Security
  1. The protocol described in the text for generating one-time passwords has vulnerabilities that can allow attackers to gain unauthorized access.
  2. Using insecure communication channels for transferring sensitive information, like one-time passwords, can lead to security flaws.
  3. The importance of forward secrecy in protocols to prevent attacks like the reflection attack highlighted in the text.

The Internet of Broken Protocols: Showcase #3

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 12 Aug 16
🕹 Technology Security
  1. The pairing protocol may be vulnerable to man-in-the-middle attacks due to how codes are exchanged.
  2. The unlocking process is weak as it uses the same challenge each time, making it easier for attackers to intercept and relay responses.
  3. Improving the protocol involves ensuring bidirectional unique challenges and considering time limits for exchanges to enhance security.

The Internet of Broken Protocols: Showcase #2

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 11 Aug 16
🕹 Technology Security
  1. Devices in the Internet of Things (IoT) do not have easy-to-remember identifiers like domain names, affecting traditional authentication methods.
  2. Weaknesses in IoT protocol designs include lack of cryptographically bound data and forward secrecy, and susceptibility to known attacks like Bleichenbacher attack.
  3. Public key encryption used for authentication in IoT can be exploited through various attacks, highlighting the need for stronger security measures.

Security and Privacy in Google Allo

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 19 May 16
🕹 Technology Security
  1. Google Allo offers both regular and incognito chat modes, encrypting messages when in transit or at rest to ensure security.
  2. The most important privacy feature in Allo is the disappearing messages, as shown by user studies focusing on physical device security and message deletion.
  3. For normal users, the priority is safeguarding their data from people around them, like family and friends, rather than more advanced threats like government surveillance.

Trivial birthday attacks against HMAC

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 06 Apr 16
🕹 Technology Security
  1. HMAC is vulnerable to birthday attacks, which can lead to forged signatures with lower cost.
  2. The second attack, duplicate signature attack, is security-relevant as it can produce two messages with the same tag, exploiting a server's validation system.
  3. Birthday attacks on HMAC can often be parallelized, and using HMAC-SHA256 is recommended for increased security.

Một nghiên cứu thất bại

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 30 Mar 16
🕹 Technology Security
  1. Understand your tools and use them efficiently. Don't waste time trying to solve a problem in a complex way when a simple solution already exists.
  2. Experiment with your ideas without bias. Test all scenarios, even those that may disprove your initial hypothesis. Failure is part of the research process.
  3. Research and learn from existing studies before diving into a new project. Taking a few minutes to search for prior work can save time, money, and prevent investing in unfruitful ideas.

Đầu tư an toàn thông tin thế nào cho đúng?

Thái | Hacker | Kỹ sư tin tặc • 0 implied HN points • 12 Jan 16
🕹 Technology Security
  1. Using existing security solutions may not always guarantee safety, as they can also have vulnerabilities.
  2. Investing in people for information security is crucial, as they are the ones who can truly strengthen the system.
  3. Vietnam needs to focus on developing a skilled workforce in information security and investing in training and education to protect against potential cyber threats.