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SANS Stormcast Monday, July 7th, 2025: interesting usernames; More sudo issues; CitrixBleed2 PoC; Short Lived Certs Interesting ssh/telnet usernames Some interesting usernames observed in our honeypots https://isc.sans.edu/diary/A%20few%20interesting%20and%20notable%20ssh%20telnet%20usernames/32080 More sudo trouble The host option in Sudo can be exploited to execute commands on unauthorized hosts. https://www.stratascale.com/vulnerability-alert-CVE-2025-32462-sudo-host CitrixBleed2 PoC Posted (CVE-2025-5777) WatchTwer published additional details about the recently patched CitrixBleed vulnerability, including a PoC exploit. https://labs.watchtowr.com/how-much-more-must-we-bleed-citrix-netscaler-memory-disclosure-citrixbleed-2-cve-2025-5777/ Instagram Using Six Day Certificates Instagram changes their TLS certificates daily and they use certificates that are just about to expire in a week. https://hereket.com/posts/instagram-single-day-certificates/ keywords: usernames, scadaadmin, gpu001, gpu002; sudo; citrix; netscaler; citrixbleed; instagram; certificates
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