SANS Internet Stormcenter Daily Cyber Security Podcast (Stormcast) A brief daily summary of what is important in information security. The podcast is published every weekday and designed to get you ready for the day with a brief, usually 5 minute long, summary of current network security related events. The content is late breaking, educational and based on listener input as well as on input received by the SANS Internet Stormcenter. You may submit questions and comments via our contact form at https://isc.sans.edu/contact.html .
- SANS Stormcast Friday April 24rd, 2026: Apple Update; Bitwarden Compromise; ASP.NET Core Patch
by Dr. Johannes B. Ullrich on April 24, 2026 at 2:00 amApple Patches Exploited Notification Flaw https://isc.sans.edu/diary/Apple%20Patches%20Exploited%20Notification%20Flaw/32922 Bitwarden CLI Compromised https://socket.dev/blog/bitwarden-cli-compromised https://community.bitwarden.com/t/bitwarden-statement-on-checkmarx-supply-chain-incident/96127 Microsoft Security Advisory CVE-2026-40372 ASP.NET Core Elevation of Privilege https://github.com/dotnet/announcements/issues/395
- SANS Stormcast Thursday, April 23rd, 2026: Stealing Telegram Sessions; Oracle CPU; Firefox Patchesby Dr. Johannes B. Ullrich on April 23, 2026 at 2:00 am
Beyond Cryptojacking: Telegram tdata as a Credential Harvesting Vector, Lessons from a Honeypot Incident https://isc.sans.edu/diary/%5BGuest%20Diary%5D%20Beyond%20Cryptojacking%3A%20Telegram%20tdata%20as%20a%20Credential%20Harvesting%20Vector%2C%20Lessons%20from%20a%20Honeypot%20Incident/32888 Checkmarx Compromise https://socket.dev/blog/checkmarx-supply-chain-compromise Oracle Quarterly Critical Patch Update https://www.oracle.com/security-alerts/cpuapr2026.html Firefox 150 – Mythos AI https://blog.mozilla.org/en/privacy-security/ai-security-zero-day-vulnerabilities/
- SANS Stormcast Wednesday, April 22nd, 2026: WAV Malware; GitHub OAUTH Phishing; Perforce Settingsby Dr. Johannes B. Ullrich on April 22, 2026 at 2:00 am
A .WAV With A Payload https://isc.sans.edu/diary/A%20.WAV%20With%20A%20Payload/32910 The Phishy GitHub Issue Case https://blog.atsika.ninja/posts/the-phishy-github-issue-case/ P4WNED: How Insecure Defaults in Perforce Expose Source Code Across the Internet https://morganrobertson.net/p4wned/
- SANS Stormcast Tuesday, April 21st, 2026: CVE and EPSS; Windows Server 2025 OOB; QEMU Abuse;by Dr. Johannes B. Ullrich on April 21, 2026 at 2:00 am
Handling the CVE Flood With EPSS https://isc.sans.edu/diary/Handling%20the%20CVE%20Flood%20With%20EPSS/32914 Windows Server 2025 Out of Band Patch https://learn.microsoft.com/en-us/windows/release-health/windows-message-center#4835 QEMU abused to evade detection and enable ransomware delivery https://www.sophos.com/en-us/blog/qemu-abused-to-evade-detection-and-enable-ransomware-delivery
- SANS Stormcast Monday, April 20th, 2026: Lumma Stealer and Sectop RAT; Windows 0-Day Exploited; NIST NVD Update; FortiSandbox PoCby Dr. Johannes B. Ullrich on April 20, 2026 at 2:00 am
Lumma Stealer infection with Sectop RAT (ArechClient2) https://isc.sans.edu/diary/Lumma%20Stealer%20infection%20with%20Sectop%20RAT%20%28ArechClient2%29/32904 Three Recent Windows Defender Vulnerabilities Exploited (one 0-day) https://x.com/HuntressLabs/status/2044882115574091960 FortiSandbox PoC Exploit CVE-2026-39808 https://github.com/samu-delucas/CVE-2026-39808?tab=readme-ov-file NIST Updates NVD Operations to Address Record CVE Growth https://www.nist.gov/news-events/news/2026/04/nist-updates-nvd-operations-address-record-cve-growth
- SANS Stormcast Friday, April 17th, 2026: DVRs Again; Cisco Again; Windows Defender Again; Sonatypeby Dr. Johannes B. Ullrich on April 17, 2026 at 2:00 am
Compromised DVRs and Finding Them in the Wild https://isc.sans.edu/diary/%5BGuest%20Diary%5D%20Compromised%20DVRs%20and%20Finding%20Them%20in%20the%20Wild/32886 Cisco ISE RCE Vulnerability and WebEx Auth Bypass CVE-2026-20184 CVE-2026-20180 CVE-2026-20186 https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-rce-4fverepv https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-cui-cert-8jSZYhWL Windows Defender 0-Day (RedSun) https://github.com/Nightmare-Eclipse/RedSun Sonatype Vulnerability CVE-2026-5189 https://support.sonatype.com/hc/en-us/articles/50817138825491-CVE-2026-5189-Nexus-Repository-3-Hardcoded-Credential-in-Internal-Database-Component-2026-04-15
- SANS Stormcast Thursday, April 16th, 2026: AI Credential Scans; Microsoft Update Issues; RDP Warnings; GitHub Action Vulns;by Dr. Johannes B. Ullrich on April 16, 2026 at 2:00 am
Scanning for AI Models https://isc.sans.edu/diary/Scanning%20for%20AI%20Models/32896 Microsoft Update Problems https://support.microsoft.com/en-us/topic/april-14-2026-kb5082063-os-build-26100-32690-c57e289d-27c9-47cd-a183-72fabc62c5d7#:~:text=Known%20issues%20in%20this%20update Microsoft RDP File Warnings https://learn.microsoft.com/en-us/windows-server/remote/remote-desktop-services/remotepc/understanding-security-warnings AI GitHub Action Vulnerabilities https://oddguan.com/blog/comment-and-control-prompt-injection-credential-theft-claude-code-gemini-cli-github-copilot/ https://www.theregister.com/2026/04/15/claude_gemini_copilot_agents_hijacked/ Wireguard Update https://lists.zx2c4.com/pipermail/wireguard/2026-April/009561.html
- SANS Stormcast Wednesday, April 15th, 2026: Microsoft, Adobe, Fortinet and others Patchesby Dr. Johannes B. Ullrich on April 15, 2026 at 2:00 am
Microsoft Patch Tuesday April 2026 https://isc.sans.edu/forums/diary/Microsoft%20Patch%20Tuesday%20April%202026./32898/ Adobe Patches https://helpx.adobe.com/security/Home.html Fortinet Patches https://fortiguard.fortinet.com/psirt
- SANS Stormcast Tuesday, April 14th, 2026: EncystPHP Webshell; CPUID Compromise; OpenAI Mac Cert Issue; Axios Vulnerabilityby Dr. Johannes B. Ullrich on April 14, 2026 at 2:00 am
Scans for EncystPHP Webshell https://isc.sans.edu/diary/Scans%20for%20EncystPHP%20Webshell/32892 CPUID Compromise https://securelist.com/tr/cpu-z/119365/ https://x.com/d0cTB/status/2042520961824559150 OpenAI Mac Application Update due to Axios Compromise https://openai.com/index/axios-developer-tool-compromise/ Axios Vulnerability CVE-2026-40175 https://github.com/axios/axios/security/advisories/GHSA-fvcv-3m26-pcqx
- SANS Stormcast Monday, April 13th, 2026: Obfuscated JavaScript; Numbers in Passwords; Adobe Patches 0-Day; ClickFix Fix Bypassby Dr. Johannes B. Ullrich on April 13, 2026 at 2:00 am
Obfuscated JavaScript or Nothing https://isc.sans.edu/diary/Obfuscated%20JavaScript%20or%20Nothing/32884 Numbers in Passwords https://isc.sans.edu/diary/Number%20Usage%20in%20Passwords%3A%20Take%20Two/32866 Adobe 0-Day Patch CVE-2026-34621 https://helpx.adobe.com/security/products/acrobat/apsb26-43.html ClickFix Bypass via ScriptEditor https://www.jamf.com/blog/clickfix-macos-script-editor-atomic-stealer/
- SANS Stormcast Thursday, April 9th, 2026: Honeypot Fingerprinting; Microsoft Locks Developer Accounts; ActiveMQ Vuln;by Dr. Johannes B. Ullrich on April 9, 2026 at 2:00 am
Honeypot Fingerprinting https://isc.sans.edu/diary/More%20Honeypot%20Fingerprinting%20Scans/32878 Microsoft Locks Accounts for Privacy/Encryption Related Developers https://sourceforge.net/p/veracrypt/discussion/general/thread/9620d7a4b3/ https://news.ycombinator.com/item?id=47687884 https://x.com/windscribecom/status/2041929519628443943 https://windowsforum.com/threads/april-2026-windows-update-ends-cross-signed-kernel-driver-trust.410487/ Remote Code Execution in Apache ActiveMQ (CVE-2026-34197) https://horizon3.ai/attack-research/disclosures/cve-2026-34197-activemq-rce-jolokia/
- SANS Stormcast Wednesday, April 8th, 2026: Pivoting for Webshells; WatchGuard Firebox Patch; Project Glasswing; Kubernetes Misconfigurationsby Dr. Johannes B. Ullrich on April 8, 2026 at 2:00 am
A Little Bit Pivoting: What Web Shells are Attackers Looking for Today? https://isc.sans.edu/diary/A%20Little%20Bit%20Pivoting%3A%20What%20Web%20Shells%20are%20Attackers%20Looking%20for%3F/32874 WatchGuard Firebox Arbitrary File Write via Path Traversal in Fireware Web UI https://www.watchguard.com/wgrd-psirt/advisory/wgsa-2026-00009 Project Glasswing https://www.anthropic.com/glasswing Current Threats Against Kubernetes https://unit42.paloaltonetworks.com/modern-kubernetes-threats/
- SANS Stormcast Tuesday, April 7th, 2026: Redirects in Phishing; Internet Bug Bounty Suspended; Bluehammer; Keycloak MFA Bypassby Dr. Johannes B. Ullrich on April 7, 2026 at 2:00 am
How often are redirects used in phishing in 2026? https://isc.sans.edu/diary/How%20often%20are%20redirects%20used%20in%20phishing%20in%202026%3F/32870 Hackerone Suspends Internet Bug Bounty https://hackerone.com/ibb?type=team https://www.linkedin.com/posts/danielstenberg_hackerone-share-7446667043380076545-RX9b/ Bluehammer Windows 0-day Privilege Escalation https://github.com/Nightmare-Eclipse/BlueHammer https://deadeclipse666.blogspot.com/2026/04/public-disclosure.html https://deepwiki.com/Nightmare-Eclipse/BlueHammer Keycloak MFA Bypass CVE-2026-3429 https://access.redhat.com/security/cve/cve-2026-3429
- SANS Stormcast Monday, April 6th, 2026: TeamPCP Update and Axio Post Mortem; Fortinet 0-Dayby Dr. Johannes B. Ullrich on April 6, 2026 at 2:00 am
Team PCP Update and Axios Post Mortem https://isc.sans.edu/diary/32864 https://github.com/axios/axios/issues/10636 Strapi NPM Packages Compromised https://safedep.io/malicious-npm-strapi-plugin-events-c2-agent/ Fortinet CVE-2026-35616 exctively exploited https://fortiguard.fortinet.com/psirt/FG-IR-26-099
- SANS Stormcast Friday, April 3rd, 2026: Vite Exploits; OpenSSH 10.3; Claude Code Vulnby Dr. Johannes B. Ullrich on April 3, 2026 at 2:00 am
Attempts to Exploit Exposed “Vite” Installs (CVE-2025-30208) https://isc.sans.edu/diary/Attempts%20to%20Exploit%20Exposed%20%22Vite%22%20Installs%20%28CVE-2025-30208%29/32860 OpenSSH 10.3 Release https://seclists.org/oss-sec/2026/q2/7 Claude Code Vulnerability https://adversa.ai/claude-code-security-bypass-deny-rules-disabled/
- SANS Stormcast Thursday, April 2nd, 2026: Script Removing ADS/MotW; Google Chrome 0-Day; iOS/iPadOS 18 Update;by Dr. Johannes B. Ullrich on April 2, 2026 at 2:00 am
Malicious Script That Gets Rid of ADS https://isc.sans.edu/diary/Malicious%20Script%20That%20Gets%20Rid%20of%20ADS/32854 Google Chrome Update fixes 21 Vulnerabilities and 0-Day https://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_31.html Apple Addresses Darksword Vulnerabilities for older devices https://support.apple.com/en-us/126793
- SANS Stormcast Wednesday, April 1st, 2026: Application Control Bypass; Axios NPM Module Compromise; TeamPCP vs Cloudby Dr. Johannes B. Ullrich on April 1, 2026 at 2:05 am
Application Control Bypass for Data Exfiltration https://isc.sans.edu/diary/Application%20Control%20Bypass%20for%20Data%20Exfiltration/32850 Axios NPM Module Supply Chain Compromise https://www.stepsecurity.io/blog/axios-compromised-on-npm-malicious-versions-drop-remote-access-trojan https://www.linkedin.com/events/7444763050819092480/ TeamPCP vs. Cloud Resources https://www.wiz.io/blog/tracking-teampcp-investigating-post-compromise-attacks-seen-in-the-wild
- SANS Stormcast Tuesday, March 31st, 2026: Honeypot Session Lifetime; Let’s Encrypt Tests Mass Revocation; F5 RCE Exploitedby Dr. Johannes B. Ullrich on March 31, 2026 at 2:00 am
Honeypot Session Lifetime https://isc.sans.edu/diary/DShield%20%28Cowrie%29%20Honeypot%20Stats%20and%20When%20Sessions%20Disconnect/32840 Let s Encrypt Tests Mass Revocation https://community.letsencrypt.org/t/lets-encrypt-2026-mass-revocation-simulation/245960 https://www.certkit.io/blog/ari-solves-mass-certificate-revocation https://www.certkit.io/blog/lets-encrypt-mass-revocation-simulation F5 Vulnerability Re-Classified (and already exploited) as RCE https://my.f5.com/manage/s/article/K000156741
- SANS Stormcast Monday, March 30th, 2026: More TeamPCP: telnyx; Netscaler Exploit; macOS ClickFix Fix; Windows Smart Installby Dr. Johannes B. Ullrich on March 30, 2026 at 2:00 am
TeamPCP Update #2: Telnyx PyPi Compromise https://isc.sans.edu/diary/TeamPCP%20Supply%20Chain%20Campaign%3A%20Update%20002%20-%20Telnyx%20PyPI%20Compromise%2C%20Vect%20Ransomware%20Mass%20Affiliate%20Program%2C%20and%20First%20Named%20Victim%20Claim/32838 Citrix Netscaler Vulnerability Details https://labs.watchtowr.com/the-sequels-are-never-as-good-but-were-still-in-pain-citrix-netscaler-cve-2026-3055-memory-overread/ macOS Clickfix Warning https://x.com/ClassicII_MrMac/status/2036797948911141129 Windows Smart Install https://textslashplain.com/2026/03/24/windows-choose-where-to-get-apps/
- SANS Stormcast Friday, March 27th, 2026: TeamPCP Update; DarkSword vs Patches; LangFlow Exploitedby Dr. Johannes B. Ullrich on March 27, 2026 at 2:00 am
TeamPCP Supply Chain Campaign: Update 001 – Checkmarx Scope Wider Than Reported, CISA KEV Entry, and Detection Tools Available https://isc.sans.edu/diary/TeamPCP%20Supply%20Chain%20Campaign%3A%20Update%20001%20-%20Checkmarx%20Scope%20Wider%20Than%20Reported%2C%20CISA%20KEV%20Entry%2C%20and%20Detection%20Tools%20Available/32834 DarkSword and This Weeks iOS Updates https://cloud.google.com/blog/topics/threat-intelligence/darksword-ios-exploit-chain LangFlow Exploited https://www.cisa.gov/news-events/alerts/2026/03/25/cisa-adds-one-known-exploited-vulnerability-catalog
