OpenSSH Backdoors

In 2002, a backdoor was discovered in OpenSSH due to a compromised version of the source code hosted on ftp.openbsd.org. This incident was a reminder of the risks of supply-chain attacks, highlighting the importance of verifying checksums and maintaining the integrity of build systems in open-source projects. The attack, while simple, had significant implications for the security of widely-used software like OpenSSH.