Researchers discovered Squidbleed, a 29-year-old memory leak in Squid Proxy that lets attackers intercept unencrypted HTTP traffic — a vulnerability that survived nearly three decades of audits and rewrites. The author notes this is largely a nonissue today since HTTPS became standard after Let's Encrypt's 2014 launch, making the data exposed through unencrypted proxies less useful to attackers. The real concern is older systems still running vulnerable Squid versions (like the one deployed on commercial flights), which explains how it went undetected so long — most modern traffic is already encrypted.