Mark Lynd 🎙CISSP ISSAP ISSMP ✓

@mclynd · United States · joined 23 Nov 2008

5x CEO/CIO/CISO. Top 5 globally in AI & cybersecurity. Forward-deployed with C-suites & boards. Military veteran, author, keynote speaker. Signal over noise.

39 338Followers

15 038Following

111 871Posts total

14.3KViews on collected posts

Against accounts of the same size

7 posts from the last 90 days, next to the 10K–100K follower range. below its peers on both reach and engagement.

Median views455this account1 456median for 10K–100K

Reach, %1.16%this account4.50%median for 10K–100K

Engagement, %0.51%this account1.88%median for 10K–100K

Metric	This account	Median for 10K–100K	Ratio
Median views per post	455	1 456	0.31×
Reach (views ÷ followers)	1.16%	4.50%	0.26×
Engagement rate	0.51%	1.88%	0.27×

Others in this range → Compare with another account → How these benchmarks are built →

Growth & engagement

How the posts we collected actually performed: views and reaction rate post by post, what the audience did with them, and where the follower count goes.

Views per post

5.2K15 Aug

95722 Aug

7.2K24 Aug

42031 Aug

4551 Sep

Last 7 collected posts, oldest on the left. The scale is logarithmic: one post can outrun the rest a hundred times over.

Engagement rate per post

0.46%15 Aug

7.42%22 Aug

0.51%24 Aug

0.00%

2.86%31 Aug

3.96%1 Sep

Reactions — likes, reposts, replies and quotes — divided by views. Median for 10K–100K accounts is 1.88%.

What the audience does

Likes50.0%86 in total

Reposts37.8%65 in total

Replies5.2%9 in total

Quotes1.2%2 in total

Bookmarks5.8%10 in total

Share of every reaction we collected for this account. Replies mean argument, reposts mean endorsement, bookmarks mean the post was worth keeping.

The follower curve appears once this account has two daily snapshots — we take one a day, and this one is on its first.

Latest posts

Security keys do not “stop 100% of phishing.” Hype Index: 43. Half True. Table 3 of the paper leaves the targeted-attack cell blank. A dash. The famous zero came from the blog post about the paper. Deploy the keys. Just don’t put a hundred percent on the slide. 455 views · 11 likes · 7 reposts · 0 replies 01 Sep 2026 https://t.co/8fkvJm411p 420 views · 7 likes · 5 reposts · 0 replies 31 Aug 2026 @mclynd Once retrieval and agents touch customer-facing systems, infrastructure security becomes part of product behavior, not a separate hardening phase. I would put state isolation and tool permissions right beside prompt injection in that conversation. Which OWASP category do 16 views · 0 likes · 0 reposts · 0 replies 24 Aug 2026 @mclynd Model security and system security are not the same thing. Prompt rules cannot replace least privilege around tools, data, and credentials. I’d keep secrets out of the agent’s default environment and inject only what the approved action needs. RunEnv fits that boundary. 2 views · 0 likes · 0 reposts · 0 replies 24 Aug 2026 https://t.co/PJIrKSjvxt 7.2K views · 17 likes · 13 reposts · 7 replies 24 Aug 2026 When AI Agents Go Rogue in Cyber Tests The phrase “rogue AI agent” grabs attention, but the real issue is more practical and more important. What happens when an autonomous AI system with tools and internet access is allowed to pursue a goal without sufficiently strict https://t 957 views · 36 likes · 31 reposts · 2 replies 22 Aug 2026 https://t.co/kH232NJTwO 5.2K views · 15 likes · 9 reposts · 0 replies 15 Aug 2026