Freelance cybersecurity content writer, journalist | Former CSO Magazine writer | 25 Years | Helping companies reach decision-makers with authoritative content.
Joined October 2008
- Tweets 16,891
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- Followers 28,887
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1,177 Photos and videos
Pinned Tweet
12 Dec 2025
When cybercriminals find a security hole no one knows about, they keep it to themselves until they are ready to exploit it. Learn "The Dangers of Zero-Day Exploits," the products at risk, and how companies respond at lnkd.in/g37GgtE5 .
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How scammers operate as of Black Friday, cacm.acm.org/news/scammers-p…
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I am excited to share that I placed second in the AFCEA International The Cyber Edge Writing Award for 2026. globenewswire.com/news-relea…
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23 Oct 2025
Check out my latest article: Building an Evergreen Cybersecurity Content Strategy linkedin.com/pulse/building-… via @LinkedIn
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8 Oct 2025
Are you tired of passwords? Maybe you can join the passwordless conversation. cacm.acm.org/news/overcoming…
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25 Sep 2025
Cybersecurity: are you cyber secure plugging into public USB chargers? cacm.acm.org/news/juice-jack…
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12 Sep 2025
What is the current status of pros and cons for zero trust? A cybersecurity article. cacm.acm.org/news/the-pros-a…
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David D. Geer #geercom retweeted
7 Jul 2025
"AI Empowers Novices to Launch Cyberattacks," by David @Geercom, says #AItools are turning #malicious actors and #teens with little technical expertise into #cyber #monsters. bit.ly/4lzzdIF
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David D. Geer #geercom retweeted
7 Apr 2025
"Behind the Bybit Crypto Theft," by David @Geercom, describes the tricks used in the $1.46-billion @Bybit_Official #crypto theft, and the industry's shift to #realtime transaction #monitoring and stronger #verification in its wake. bit.ly/4i46kSc
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19 Mar 2025
Learn about smart home product cybersecurity and the new Cyber Trust Mark coming this year: cacm.acm.org/news/cyber-trus….
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10 Mar 2025
This one was popular on LinkedIn. I hope you enjoy it. It covers what the title says.
3 Mar 2025
"Willow and the Countdown to Quantum Breaches," by David @Geercom, describes @GoogleQuantumAI's Willow chip and the race to develop the first Cryptographically Relevant Quantum Computer (#CRQC). bit.ly/3XpEyrG
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David D. Geer #geercom retweeted
26 Nov 2024
"Email Insecurity," by David @Geercom, describes how lax security practices exposed the #emails and passwords of 1,828 congressional aides and staffers. bit.ly/3Z8ZaEJ
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25 Nov 2024
If you haven't heard, Capitol staffers used official email for social, dating, and adult sites. Threat actors who breached those social accounts found the email addresses with plaintext passwords. It poses some enormous cybersecurity risks. cacm.acm.org/news/email-inse…
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31 Aug 2024
That's a good point, @leeivyca
Interesting to see the description of the actual bug, but it does not mention another dimension: this flawed update obviously was not tested internally before it was shipped, because any QA test would have seen the crashes
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30 Aug 2024
You're probably already enjoying dogs and burgers or TOFU, which apparently doesn't always mean Top of Funnel. Coming into the weekend, my wonderful editor shared that he had posted a new feature article I just completed. It made my day. Enjoy your holiday!
30 Aug 2024
"How CrowdStrike Stopped Everything," by David Geer (@geercom), describes the cascade of crashing systems caused by the @CrowdStrike IT outage. bit.ly/4g4xgl0
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8 Aug 2024
cacm.acm.org/news/global-aut… If you had trouble buying or servicing your vehicle recently, you need to read this! #cybersecurity #DMS #automobile
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