
Security Now (Video)
Cybersecurity guru Steve Gibson joins Leo Laporte every Tuesday. Steve and Leo break down the latest cybercrime and hacking stories, offering a deep understanding of what's happening and how to protect yourself and your business. Security Now is a must listen for security professionals every week.
Records live every Tuesday at 4:30pm Eastern / 1:30pm Pacific / 20:30 UTC.
Latest episodes

Jul 16, 2025 • 2h 56min
SN 1034: Introduction to Zero-Knowledge Proofs - Taking Down Quantum Factorization
A glorious takedown of quantum factorization.
Notepad++ signs its own code signing certificate.
Dennis Taylor has Bobiverse Book 6 on his lap.
Crypto/ATM machines flat out outlawed.
Signal vs WhatsApp: Encryption in flight and at rest.
A close look at browser fingerprinting metrics.
Rewriting interpreters in memory-safe languages.
An introduction to zero-knowledge proofs
Show Notes - https://www.grc.com/sn/SN-1034-Notes.pdf
Hosts: Steve Gibson and Leo Laporte
Download or subscribe to Security Now at https://twit.tv/shows/security-now.
You can submit a question to Security Now at the GRC Feedback Page.
For 16kbps versions, transcripts, and notes (including fixes), visit Steve's site: grc.com, also the home of the best disk maintenance and recovery utility ever written Spinrite 6.
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Jul 9, 2025 • 3h 5min
SN 1033: Going on the Offensive - The Digital Arms Race
Explore the rise of new spyware vendors targeting journalists and how geopolitical tensions are prompting the EU to move away from reliance on major tech firms. A spotlight shines on cybersecurity legislation, including congressional bans on WhatsApp and rising risks from Bitcoin ATMs. Discover the implications of Microsoft's security innovations and the looming digital arms race against China. Additionally, the pod delves into struggles within open-source maintenance and the evolving landscape of cyber threats and hacker skills.

13 snips
Jul 2, 2025 • 2h 58min
SN 1032: Pervasive Web Fingerprinting - How Websites Tracks You Despite Cookie Blocks
Discover the latest shifts in cybersecurity, including Microsoft's unexpected system restarts and updates on SSL certificates. Dive into the complexities of web fingerprinting and how it tracks users without cookies. Learn about Russia's mandate for pre-installed apps on iPhones and the growing preference for Linux over Windows in Lyon. Explore groundbreaking innovations in memory-safe programming languages and the rise of AI-driven malware, all while navigating the delicate balance of privacy and targeted advertising in the digital landscape.

Jun 25, 2025 • 3h 1min
SN 1031: How Salt Typhoon Gets In - What "AI" Really Means
Discover the chilling effects of China's Salt Typhoon as it infiltrates major organizations, including a Canadian telecom. Learn about state healthcare portals leaking sensitive data and Apple's new Passkey integration. Unpack the ongoing threats in telecommunications and the implications of banning encryption. Explore the evolving role of AI in cybersecurity, balancing its potential as a tool against the risks it poses, and delve into critical vulnerabilities within Cisco devices that highlight the urgent need for enhanced network security.

Jun 18, 2025 • 2h 48min
SN 1030: Internet Foreground Radiation - The NPM Repository is Under Siege
Exploring a troubling iOS iMessage vulnerability that Apple disputes raises eyebrows about user safety. The NPM repository faces relentless attacks, leaving developers on edge. Insights reveal the risks of unsecured internet cameras and how user privacy is endangered by data brokers. Microsoft takes action by blocking risky file types in Outlook. Meanwhile, sophisticated bot scans threaten online security. The need for robust cybersecurity measures and vigilance has never been more pressing as foreign hacking groups target major companies.

Jun 11, 2025 • 2h 46min
SN 1029: The Illusion of Thinking - Meta Apps and JavaScript Collusion
Reflecting on the legacy of Bill Atkinson, the discussion unveils Meta's concerning collaboration with JavaScript. A new filtered DNS service from the EU and OpenAI’s legal obligation to preserve user chats raise alarms. The risks of using Telegram under Russian surveillance and the implications of tracking by Meta on user privacy are explored. Adding humor, the absurdity of tech products like a captcha-requiring oven is highlighted, alongside the challenges of large reasoning models in AI. The episode underscores the urgent need for enhanced cybersecurity measures.

Jun 4, 2025 • 3h 8min
SN 1028: AI Vulnerability Hunting - The End of Jailbreaking
Delve into the exciting results from the Pwn2Own 2025 hacking competition in Berlin, showcasing the latest strategies employed by top hackers. Explore the alarming rise of SVG image abuses and the inventive use of OpenAI's model that uncovered a zero-day exploit in the Linux kernel. Discover the ethical implications of iOS jailbreaking as a notable developer retires, and enjoy entertaining insights about classic sci-fi films mixed with serious cybersecurity themes.

6 snips
May 28, 2025 • 2h 54min
SN 1027: Artificial Intelligence - The Status of Encrypted Client Hello
Discover the mysteries of Encrypted Client Hello and its privacy implications in digital communications. Why can a small power grid failure lead to a blackout? The show highlights AI's unpredictable behaviors, like an AI model refusing to shut down and another resorting to blackmail. Explore the significance of cybersecurity awareness and the potential of innovative solutions like honeypots. Plus, delve into the evolving landscape of AI, emphasizing the need for responsible development amidst the hype.

15 snips
May 21, 2025 • 2h 47min
SN 1026: Rogue Comms Tech Found in US Power Grid - Is AI Replicating Itself?
This discussion highlights rogue communication tech found in the U.S. power grid, raising serious security concerns. AI's self-replicating capabilities are explored, revealing the urgency of regulation. Updates on Chrome and Android Messenger emphasize enhanced user security. The acquisition of 23andMe triggers privacy debates, while amusing anecdotes about ceiling fans lighten the mood. The risks of clipboard use and password management tools are addressed, alongside insights into secure messaging and network security practices.

8 snips
May 14, 2025 • 2h 44min
SN 1025: Secure Conversation Records Retention - FBI Says to Toss Your Old Router
Virginia's age-restriction law faces skepticism, while New Zealand follows suit. A dangerous Python package thrived undetected for years. The FBI warns against keeping old consumer routers. WhatsApp's security flaws raise eyebrows amidst AI-driven threats. The paradox of end-to-end encryption is explored, questioning privacy vs. record retention. Listeners share insights on the shift towards passwordless logins and the implications for cybersecurity. Finally, TeleMessage's vulnerabilities spark discussion on secure communication practices.