Box change history: [Medium] Increased FTP 530 Captcha errors

Box reported a major-impact incident affecting FTP and SFTP logins with increased FTP 530 Captcha errors, starting 2026-02-27 20:02 UTC and lasting 3 h 49 min. A fix was implemented at 2026-02-27 21:58 UTC, and full functionality was restored by resolution at 2026-02-27 23:51 UTC.