Proof of Stake (PoS) blockchains like Algorand face a tradeoff between decentralization and security, unlike Proof of Work (PoW) blockchains.
Algorand aims to prevent forking with innovative cryptographic techniques and by requiring honest money control, but assumptions about user behavior bring in security concerns.
Further decentralization in Algorand can make the network more vulnerable to bribery attacks, showing a tradeoff between security, decentralization, and scalability.