John Bambenek is President of Bambenek Labs, a threat intelligence and digital investigations firm. He has spent 20 years in the industry helping research emerging threats and leading large-scale intelligence sharing communities to engage in targeted disruption of criminal activities online. He has developed a variety of techniques to conduct digital surveillance that is used to monitor domain generation algorithms and malware configurations which are used by thousands of organizations world-wide. In addition, he tracks financial transactions of various neonazi and supremacist individuals and organizations. He has spoken at conferences around the world, has published two books in addition to several book chapters and articles, and he once appears on the Daily Show with Jon Stewart.

Recent Diaries:

• Writing Yara Rules for Fun and Profit: Notes from the FireEye Breach Countermeasures
• Hunting for SigRed Exploitation
• VMWare Security Advisory on DoS Vulnerability in ESXi
• MSFT July 2019 Patch Tuesday
• Solving the WHOIS and Privacy Problem: A Draft of Implementing WHOIS in DNS

Guy has a B.A. (IT) from University of Quebec and holds the prestigious GIAC Security Expert (GSE) certification as well as the GIAC GSEC(G), GCIA(G), GCIH(G), GCUX(G), GCFA, GPEN certifications.

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Recent Diaries:

• Scanning for Laravel - a PHP Framework for Web Artisants
• ?Anyone get the ASN of the Truck that Hit Me?!?: Creating a PowerShell Function to Make 3rd Party API Calls for Extending Honeypot Information [Guest Diary]
• Potential Weaponizing of Honeypot Logs [Guest Diary]
• How I made a qwerty ?keyboard walk? password generator with ChatGPT [Guest Diary]
• SystemBC Malware Activity

Recent Diaries:

• Check out a couple of my older posts
• Wireshark 4.0.2 and 3.6.10 released
• Is this traffic bAD?
• Update: mac-robber.py
• Strange goings on with port 37

Recent Diaries:

• July 2023 Microsoft Patch Update
• Warranty Repairs and Non-Removable Storage Risks
• Apple May 2021 Security Updates
• Critical Vuln in vCenter vmdir (CVE-2020-3952)
• Oracle Critical Patch Update Release

Recent Diaries:

• The low, low cost of (committing) cybercrime
• From small LNK to large malicious BAT file with zero VT score
• Kazakhstan - the world's last SSLv2 superpower... and a country with potentially vulnerable last-mile internet infrastructure
• After 28 years, SSLv2 is still not gone from the internet... but we're getting there
• Ongoing Facebook phishing campaign without a sender and (almost) without links

Jesse La Grew has been an IT professional within higher education for over 20 years. He holds a variety of GIAC certifications including the GDSA, GCCC, GCFA, GCFE, GCIA, GPYC, GSOC, GCIH, GSEC, GISF, GCTI, GCPM and GSTRT and is also a CISSP. He recently received his Bachelor's Degree at SANS Technology Institute and is progressing through his Master's program at the same institution. Jesse's background in IT started in a desktop support role. This transitioned into a cyber security focus when becoming involved in building and supporting environments meeting PCI and FISMA compliance standards. He currently works as Chief Information Security Officer at Madison College.

Recent Diaries:

• DShield and qemu Sitting in a Tree: L-O-G-G-I-N-G
• Common usernames submitted to honeypots
• What is the origin of passwords submitted to honeypots?
• Command Line Parsing - Are These Really Unique Strings?
• DShield Honeypot Maintenance and Data Retention

Renato Marinho is Chief Research Officer at Morphus Labs. His journey in the area began in 2001, when he created Nettion, one of the first firewalls to use the contemporary UTM (Unified Threat Management) concept. Experienced in cyber security, Marinho was internationally recognized in 2016 by his research that unveiled Mamba, the first full disk encryption ransomware. At Morphus Labs, he oversees research, innovation and development of new products. Master and PhD candidate in Applied Informatics, he is also professor at University of Fortaleza teaching Computer Forensics in the post-graduate course. He is also a speaker having presented at Ignite Cybersecurity Conference, BSides Delaware, BSides Vienna, WSKS Portugal and Brazilian CSIRTs Forum.

Recent Diaries:

• Microsoft September 2023 Patch Tuesday
• Microsoft August 2023 Patch Tuesday
• Microsoft May 2023 Patch Tuesday
• Guildma is now abusing colorcpl.exe LOLBIN
• Microsoft April 2023 Patch Tuesday

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Recent Diaries:

• Sandfly Security
• Exploratory Data Analysis with CISSM Cyber Attacks Database - Part 2
• Exploratory Data Analysis with CISSM Cyber Attacks Database - Part 1
• Prowler v3: AWS & Azure security assessments
• Chainsaw: Hunt, search, and extract event log records

Xavier Mertens is a freelance security consultant based in Belgium. Xavier's own company (https://xameco.be) offers services like incident handling, forensic, SOC activities, and pentesting. He holds GCIA, GFCE, GCFA, GXPN, GREM, GDAT, GNFA, GCTI, GPYC SANS certifications but also CISSP, and CISA. Xavier is a SANS Certified Instructor (FOR610 - Malware Analysis and Reverse Engineering). His blog about security is https://blog.rootshell.be and he is co-organizer of the BruCON security conference (http://www.brucon.org).

Recent Diaries:

• macOS: Who?s Behind This Network Connection?
• Python Malware Using Postgresql for C2 Communications
• More Exotic Excel Files Dropping AgentTesla
• Have You Ever Heard of the Fernet Encryption Algorithm?
• Quick Malware Triage With Inotify Tools

Mr. Santander Peláez currently serves as the CTO of Transportadora de Gas Internacional in Bogotá, Colombia. His areas of interest are Intrusion Detection, Computer Forensics, Incident Response, SCADA Security, cyber defense, threat intelligence and threat hunting.

Recent Diaries:

• Controlling network access to ICS systems
• Management of DMARC control for email impersonation of domains in the .co TLD - part 2
• Management of DMARC control for email impersonation of domains in the .co TLD - part 1
• Security headers you should add into your application to increase cyber risk protection
• Scanning s3 buckets

Didier Stevens (Microsoft MVP Consumer Security) holds many certifications from SANS, Microsoft, Cisco, ... He is a Senior Analyst (NVISO https://www.nviso.be). Didier started his own company in 2012 to provide IT security training services (http://DidierStevensLabs.com). You can find his open source security tools on his IT security related blog at https://blog.DidierStevens.com.

Recent Diaries:

• YARA Support for .LNK Files
• Quickie: Generating a YARA Rule to Detect Obfuscated Strings
• Creating a YARA Rule to Detect Obfuscated Strings
• Analysis of a Defective Phishing PDF
• Analysis of RAR Exploit Files (CVE-2023-38831)

Dr. Tok is currently a Senior Consultant at JT Consultancy & Management Pte. Ltd. and a Research Fellow at ASSET (Automated Systems SEcuriTy) Research Group in Singapore University of Technology and Design (SUTD) under the Information Systems Technology and Design (ISTD) Pillar. He was a recipient of the SG Digital (Postgraduate) Scholarship program from Infocomm Media Development Authority (IMDA), and won the Cybersecurity Awards in 2019 under the Professional category for his contributions to the Singapore information security industry. Yee Ching is a SANS Lethal Forensicator and also serves as a Co-Opted Committee Member in the Association of Information Security Professionals (AiSP). For more information, please visit https://poppopretn.com/aboutme/.

Recent Diaries:

• A Gentle Reminder: The Evolving Nature of Digital Scams
• DShield pfSense Client Update
• Analyzing a YouTube Sponsorship Phishing Mail and Malware Targeting Content Creators
• Supervision and Verification in Vulnerability Management
• Strolling through Cyberspace and Hunting for Phishing Sites

Dr. Johannes Ullrich is the Dean of Research and a faculty member of the SANS Technology Institute. In November of 2000, Johannes started the DShield.org project, which he later integrated into the Internet Storm Center. His work with the Internet Storm Center has been widely recognized. In 2004, Network World named him one of the 50 most powerful people in the networking industry. Secure Computing Magazine named him in 2005 one of the Top 5 influential IT security thinkers. His research interests include IPv6, Network Traffic Analysis and Secure Software Development. Johannes is regularly invited to speak at conferences and has been interviewed by major publications, radio as well as TV stations. He is a member of the SANS Technology Institute's Faculty and Administration as well as Curriculum and Long Range Planning Committee. As chief research officer for the SANS Institute, Johannes is currently responsible for the GIAC Gold program. Prior to working for SANS, Johannes worked as a lead support engineer for a Web development company and as a research physicist. Johannes holds a PhD in Physics from SUNY Albany and is located in Jacksonville, Florida. More Details: http://www.linkedin.com/in/johannesullrich

Recent Diaries:

• Apple Patches Three New 0-Day Vulnerabilities Affecting iOS/iPadOS/watchOS/macOS
• What's Normal? DNS TTL Values
• Obfuscated Scans for Older Adobe Experience Manager Vulnerabilities
• Internet Wide Multi VPN Search From Single /24 Network
• Apple fixes 0-Day Vulnerability in Older Operating Systems

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Recent Diaries:

• JQ: Another Tool We Thought We Knew
• Shodan's API For The (Recon) Win!
• Citrix ADC Vulnerability CVE-2023-3519, 3466 and 3467 - Patch Now!
• HAM Radio + Enigma Machine Challenge
• Taking a Bite Out of Password Expiry Helpdesk Calls

Recent Diaries:

• New Windows Print Spooler Vulnerability - CVE-2021-34481
• Mitre CWE - Common Weakness Enumeration
• Quick and dirty Python: nmap
• Quick and dirty Python: masscan
• Important Apple Updates

Recent Diaries:

• Zeek and Defender Endpoint
• IR Case/Alert Management
• Live Linux IR with UAC
• Supersizing your DUO and 365 Integration
• Preventing ISO Malware

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Recent Diaries:

• Survival time for web sites
• Some things never change ? such as SQL Authentication ?encryption?
• Importance of signing in Windows environments
• Critical vulnerability in Splunk Enterprise?s deployment server functionality
• Local privilege escalation vulnerability in polkit's pkexec (CVE-2021-4034)