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John Leyden

@jleyden.bsky.social
100 followers 253 following 26 posts

Cybersecurity journalist for csoonline.com (past Daily Swig, The Register and others). Sports fan and travel enthusiast.

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John Leyden @jleyden.bsky.social · 04/06/2025
Mikko Hypponen announces he is leaving the anti-malware industry after 34 years to join an anti- drone startup Sensofusion in August <— One of the deepest thinkers and best speakers in the industry moves on. Muchas gracias por todo y buena suerte. #InfosecurityEurope
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John Leyden @jleyden.bsky.social · 04/06/2025
Listening to Rory Stewart talking geopolitics #infosec. Trump’s decision to dismantle federal funding for universities and science, laying off US govt cybersecurity staff is bad news. Stewart predict regulatory divergence
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John Leyden @jleyden.bsky.social · 03/06/2025
SANS Institute’s James Lyne and Cairan Martin talking about trends for cybersecurity leaders at #InfosecEurope
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John Leyden @jleyden.bsky.social · 03/06/2025
Mikko Hypponen introducing a panel on AI by mentioning his 34 year career in infosecurity, back to the days of viruses on floppy discs. Mikko says cybersecurity is no longer just about securing computers but about securing society
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John Leyden @jleyden.bsky.social · 03/06/2025
Listening to NCSC’s Paul Chichester talking about geopolitics driving cyber threats
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John Leyden @jleyden.bsky.social · 03/06/2025
Let’s get it right about ColostomyBagBoy and their historic malware writing exploits…
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John Leyden @jleyden.bsky.social · 03/06/2025
Prof Brian Cox talking about black holes, quantum physics and quantum computing
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John Leyden @jleyden.bsky.social · 03/06/2025
Standing room only for the first Infosec Europe keynote
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John Leyden @jleyden.bsky.social · 03/04/2025
Great day at the #DTXM25 conference in Manchester yesterday. Saw talks by @rikferguson.com and @jakemooreuk.bsky.social as well as a timely panel on mental health in cybersecurity teams
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John Leyden @jleyden.bsky.social · 18/12/2024
I'm putting together a follow-up piece on SEC breach disclosure rules. www.csoonline.com/article/3609... How can CISOs pre-prepare to assess whether or not a breach has a "material impact" and meet these tight reporting requirements? I'm looking for comments from industry (non-vendor) CISOs.
csoonline.com
What CISOs need to know about the SEC’s breach disclosure rules
Security leaders can face personal liability peril for security fails or misleading disclosures to the SEC and navigating the reporting guidelines is not always a straightforward task.
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John Leyden @jleyden.bsky.social · 12/12/2024
UK government is running consultations in coop with French to improve transparency into the cyber intrusion market #BlackHatEU <— Analogies with defence procurement don’t map well, say foreign office reps
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John Leyden @jleyden.bsky.social · 12/12/2024
Defending off the land: Using existing Windows OS capabilities rather the XDR agents or similar from security vendors to detect and alert on attackers (HT Thinkst Canary) #BlackHatEU2024
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John Leyden @jleyden.bsky.social · 12/12/2024
Senior French interior ministry chief Brigadier General Eric Freyssinet talking cybercrime trends #BlackHatEU2024
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John Leyden @jleyden.bsky.social · 12/12/2024
Research into 4 years of threat intel on SAP vulnerabilities revealed a sharp spike in discussions in 2020 #BlackHatEU
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John Leyden @jleyden.bsky.social · 11/12/2024
Interesting talk by Johann Rehberger of embracethered.com on advanced prompt injection exploits in LLM applications such as Microsoft Copilot #BlackHatEU2024
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John Leyden @jleyden.bsky.social · 11/12/2024
WorstFit: character conversion issue with Window’s BestFit tech creates numerous vulnerabilities in various applications, Orange Tsai tells #BlackHatEU
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John Leyden @jleyden.bsky.social · 11/12/2024
KeyTrap denial of service attack against DNSSec: 10 requests per second enough to create a viable DOS attack. Worse strain of attack - single request 18 mins DOS. All resolvers vulnerable. #BlackHatEU2024
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John Leyden @jleyden.bsky.social · 11/12/2024
French geopolitics academic Frédérick Douzet talking about the geopolitical implications of network connectivity and complexity #BlackHatEU2024
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John Leyden @jleyden.bsky.social · 11/12/2024
A monoculture isn’t going to work well in a chaotic political environment, says Black Hat’s Jeff Moss #BlackHatEU2024 <—- Need to have flexibility in skills and avoid vendor lock-in
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John Leyden @jleyden.bsky.social · 10/12/2024
Thinking of trying out "I'm from the internet and I'm here to help" as a new icebreaker. "You can trust me, I'm a journalist" is far too 90s
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