Collaborate Disseminate
(c) SANS Internet Storm Center. https://isc.sans.edu Creative Commons Attribution-Noncommercial 3.0 United States License. Continue reading ISC Stormcast For Monday, July 13th, 2026 https://isc.sans.edu/podcastdetail/10004, (Mon, Jul 13th)
Wireshark release 4.6.7 fixes 12 vulnerabilities and 16 bugs.
Anyone who deals with phishing messages caught by basic security filters knows that most phishing samples tend to blend into one another, since only a small set of techniques and approaches keeps reappearing in them. That is precisely why it is worth pausing on the occasional message that does something a little out of the ordinary.
(c) SANS Internet Storm Center. https://isc.sans.edu Creative Commons Attribution-Noncommercial 3.0 United States License. Continue reading ISC Stormcast For Friday, July 10th, 2026 https://isc.sans.edu/podcastdetail/10002, (Fri, Jul 10th)
(c) SANS Internet Storm Center. https://isc.sans.edu Creative Commons Attribution-Noncommercial 3.0 United States License. Continue reading ISC Stormcast For Friday, July 10th, 2026 https://isc.sans.edu/podcastdetail/10002, (Fri, Jul 10th)
(c) SANS Internet Storm Center. https://isc.sans.edu Creative Commons Attribution-Noncommercial 3.0 United States License. Continue reading ISC Stormcast For Thursday, July 9th, 2026 https://isc.sans.edu/podcastdetail/10000, (Thu, Jul 9th)
[This is a Guest Diary by Jason Callahan, an ISC intern as part of the SANS.edu BACS program]
The stack is a memory region where a program stores temporary data -&#;x26;#;xc2;&#;x26;#;xa0;like local variables and return addresses. Think of the stack as a pile of plates in your kitchen: you can only add a new plate to the top, and you can only take one away from the top too. Programs use this same “last in, first out” principle to keep track of what they&#;x26;#;39;re doing. Every time a function is called, the program pushes a new plate onto the stack containing things like local variables and the address to return to once the function finishes. When the function is done, that plate is popped off the top, and execution resumes exactly where it left off. This simple mechanism is what allows programs to call functions&#;x26;#;xc2;&#;x26;#;xa0;within functions, and always find their way back -&#;x26;#;xc2;&#;x26;#;xa0;but it&#;x26;#;39;s also precisely why a stack that grows too large, or gets overwritten with unexpected data, becomes a favorite target for attackers looking to hijack a program&#;x26;#;39;s execution flow.
(c) SANS Internet Storm Center. https://isc.sans.edu Creative Commons Attribution-Noncommercial 3.0 United States License. Continue reading ISC Stormcast For Wednesday, July 8th, 2026 https://isc.sans.edu/podcastdetail/9998, (Wed, Jul 8th)
Yesterday, I talked about NAPTR records and how they are related to RCS. But there is another “odd” record that shows up in my DNS logs. This one isn&#;x26;#;39;t new, but I don&#;x26;#;39;t think I ever covered it: NIMLOC. At least that is what Zeek calls it. But let&#;x26;#;39;s see what it is all about.
Continue reading More Odd DNS Records: NIMLOC, (Tue, Jul 7th)