security

NetScaler ADC and NetScaler Gateway Security Bulletin for CVE-2025-6543 Citrix patched a memory overflow vulnerability leading to unintended control flow and denial of service. https://support.citrix.com/support-home/kbsearch/article?articleNumber=CTX694788 Remote code execution in CentOS Web Panel – CVE-2025-48703 An arbitrary file upload vulnerability in the user (not admin) part of Web Panel can be used to execute arbitrary code […]

Quick Password Brute Forcing Evolution Statistics After collecting usernames and passwords from our ssh and telnet honeypots for about a decade, I took a look back at how scans changed. Attackers are attempting more passwords in each scans than they used to, but the average length of passwords did not change. https://isc.sans.edu/diary/Quick%20Password%20Brute%20Forcing%20Evolution%20Statistics/32068 Introducing FileFix A […]

Scans for Ichano AtHome IP Cameras A couple days ago, a few sources started scanning for the username super_yg and the password 123. This is associated with Ichano IP Camera software. https://isc.sans.edu/diary/Scans%20for%20Ichano%20AtHome%20IP%20Cameras/32062 Critical Netscaler Security Update CVE-2025-5777 CVE 2025-5777 is a critical severity vulnerability impacting NetScaler Gateway, i.e. if NetScaler has been configured as Gateway […]

ADS & Python Tools Didier explains how to use his tools cut-bytes.py and filescanner to extract information from alternate data streams. https://isc.sans.edu/diary/ADS%20%26%20Python%20Tools/32058 Enhanced security defaults for Windows 365 Cloud PCs Microsoft announced more secure default configurations for its Windows 365 Cloud PC offerings. https://techcommunity.microsoft.com/blog/windows-itpro-blog/enhanced-security-defaults-for-windows-365-cloud-pcs/4424914 CVE-2025-34508: Another File Sharing Application, Another Path Traversal Horizon3 reveals details […]

How Long Until the Phishing Starts? About Two Weeks After setting up a Google Workspace and adding a new user, it took only two weeks for the new employee to receive somewhat targeted phishing emails. https://isc.sans.edu/diary/How%20Long%20Until%20the%20Phishing%20Starts%3F%20About%20Two%20Weeks/32052 Scammers hijack websites of Bank of America, Netflix, Microsoft, and more to insert fake phone numbers Scammers are placing […]

Extracting Data From JPEGs Didier shows how to efficiently extract data from JPEGs using his tool jpegdump.py https://isc.sans.edu/diary/A%20JPEG%20With%20A%20Payload/32048 Windows Recall Export in Europe In its latest insider build for Windows 11, Microsoft is testing an export feature for data stored by Recall. The feature is limited to European users and requires that you note an […]

Katz Stealer in JPG Xavier found some multistage malware that uses an Excel Spreadsheet and an HTA file to load an image that includes embeded a copy of Katz stealer. https://isc.sans.edu/diary/More+Steganography/32044 https://unit42.paloaltonetworks.com/malicious-javascript-using-jsfiretruck-as-obfuscation/ JavaScript obfuscated with JSF*CK is being used on over 200,000 websites to direct victims to malware Expired Discord Invite Links Used for Malware […]

Automated Tools to Assist with DShield Honeypot Investigations https://isc.sans.edu/diary/Automated%20Tools%20to%20Assist%20with%20DShield%20Honeypot%20Investigations%20%5BGuest%20Diary%5D/32038 EchoLeak: Zero-Click Microsoft 365 Copilot Data Leak Microsoft fixed a vulnerability in Copilot that could have been abused to exfiltrate data from Copilot users. Copilot mishandled instructions an attacker included in documents inspected by Copilot and executed them. https://www.aim.security/lp/aim-labs-echoleak-blogpost Thunderbolt Vulnerability Thunderbolt users may be tricked […]

Quasar RAT Delivered Through Bat Files Xavier is walking you through a quick reverse analysis of a script that will injection code extracted from a PNG image to implement a Quasar RAT. https://isc.sans.edu/diary/Quasar%20RAT%20Delivered%20Through%20Bat%20Files/32036 Delayed Windows 11 24H2 Rollout Microsoft slightly throttled the rollout of windows 11 24H2 due to issues stemming from the patch Tuesday […]

Microsoft Patch Tuesday Microsoft today released patches for 67 vulnerabilities. 10 of these vulnerabilities are rated critical. One vulnerability has already been exploited and another vulnerability has been publicly disclosed before today. https://isc.sans.edu/diary/Microsoft%20Patch%20Tuesday%20June%202025/32032 Adobe Vulnerabilities Adobe released patches for 7 different applications. Two significant ones are Adobe Commerce and Adobe Acrobat Reader. All vulnerabilities patched […]