Author Archives: SANS Internet Storm Center, InfoCON: green

Number Usage in Passwords: Take Two, (Thu, Apr 9th)

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In a previous diary [1], we looked to see how numbers were used within passwords submitted to honeypots. One of the items of interest was how dates, and more specifically years, were represented within the data and how that changed over time. It is often seen that years and seasons are used in passwords, especially when password change requirements include frequenty password changes. Some examples we might see today:

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TeamPCP Supply Chain Campaign: Update 007 – Cisco Source Code Stolen via Trivy-Linked Breach, Google GTIG Tracks TeamPCP as UNC6780, and CISA KEV Deadline Arrives with No Standalone Advisory, (Wed, Apr 8th)

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This is the seventh update to the TeamPCP supply chain campaign threat intelligence report,&#;x26;#;xc2;&#;x26;#;xa0;“When the Security Scanner Became the Weapon”&#;x26;#;xc2;&#;x26;#;xa0;(v3.0, March 25, 2026).&#;x26;#;xc2;&#;x26;#;xa0;Update 006&#;x26;#;xc2;&#;x26;#;xa0;covered developments through April 3, including the CERT-EU European Commission breach disclosure, ShinyHunters&#;x26;#;39; confirmation of credential sharing, Sportradar breach details, and Mandiant&#;x26;#;39;s quantification of 1,000+ compromised SaaS environments. This update consolidates five days of intelligence from April 3 through April 8, 2026.

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A Little Bit Pivoting: What Web Shells are Attackers Looking for?, (Tue, Apr 7th)

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Webshells remain a popular method for attackers to maintain persistence on a compromised web server. Many “arbitrary file write” and “remote code execution” vulnerabilities are used to drop small files on systems for later execution of additional payloads. The names of these files keep changing and are often chosen to “fit in” with other files. Webshells themselves are also often used by parasitic attacks to compromise a server. Sadly (?), attackers are not always selecting good passwords either. In some cases, webshells come with pre-set backdoor credentials, which may be overlooked by a less sophisticated attacker.

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TeamPCP Supply Chain Campaign: Update 006 – CERT-EU Confirms European Commission Cloud Breach, Sportradar Details Emerge, and Mandiant Quantifies Campaign at 1,000+ SaaS Environments, (Fri, Apr 3rd)

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This is the sixth update to the TeamPCP supply chain campaign threat intelligence report,&#;x26;#;xc2;&#;x26;#;xa0;“When the Security Scanner Became the Weapon”&#;x26;#;xc2;&#;x26;#;xa0;(v3.0, March 25, 2026).&#;x26;#;xc2;&#;x26;#;xa0;Update 005&#;x26;#;xc2;&#;x26;#;xa0;covered developments through April 1, including the first confirmed victim disclosure (Mercor AI), Wiz&#;x26;#;39;s post-compromise cloud enumeration findings, DPRK attribution of the axios compromise, and LiteLLM&#;x26;#;39;s release resumption after Mandiant&#;x26;#;39;s forensic audit. This update covers intelligence from April 1 through April 3, 2026.

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