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 Ben Johnson
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Profile of Ben Johnson

Co-founder and CTO, Obsidian Security
News & Commentary Posts: 7

Ben Johnson is CTO and co-founder of Obsidian Security. Prior to founding Obsidian, he co-founded Carbon Black and most recently served as the company's chief security strategist. As the company's original CTO, he led efforts to create the powerful capabilities that helped define the next-generation endpoint security space. Prior to Carbon Black, Ben was an NSA computer scientist and later worked as a cyber engineer in an advanced intrusion operations division for the intelligence community.

Johnson has extensive experience building complex systems for environments where speed and reliability are paramount. His background also includes a great deal of technical "agility," having worked on advanced operational teams supporting US national security missions and writing complex calculation engines for the financial sector.

Johnson earned a bachelor's degree in computer science from the University of Chicago and a master's degree in computer science from Johns Hopkins University. He also taught "Entrepreneurship in Technology" in the Masters Program of Computer Science at the University of Chicago in 2016 and 2017.

Articles by Ben Johnson
posted in August 2016
Manchester United Suffers Cyberattack
Dark Reading Staff 11/23/2020
As 'Anywhere Work' Evolves, Security Will Be Key Challenge
Robert Lemos, Contributing Writer,  11/23/2020
Cloud Security Startup Lightspin Emerges From Stealth
Kelly Sheridan, Staff Editor, Dark Reading,  11/24/2020
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CVE-2019-20934
PUBLISHED: 2020-11-28
An issue was discovered in the Linux kernel before 5.2.6. On NUMA systems, the Linux fair scheduler has a use-after-free in show_numa_stats() because NUMA fault statistics are inappropriately freed, aka CID-16d51a590a8c.
CVE-2020-29368
PUBLISHED: 2020-11-28
An issue was discovered in __split_huge_pmd in mm/huge_memory.c in the Linux kernel before 5.7.5. The copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check, aka CID-c444eb564fb1.
CVE-2020-29369
PUBLISHED: 2020-11-28
An issue was discovered in mm/mmap.c in the Linux kernel before 5.7.11. There is a race condition between certain expand functions (expand_downwards and expand_upwards) and page-table free operations from an munmap call, aka CID-246c320a8cfe.
CVE-2020-29370
PUBLISHED: 2020-11-28
An issue was discovered in kmem_cache_alloc_bulk in mm/slub.c in the Linux kernel before 5.5.11. The slowpath lacks the required TID increment, aka CID-fd4d9c7d0c71.
CVE-2020-29371
PUBLISHED: 2020-11-28
An issue was discovered in romfs_dev_read in fs/romfs/storage.c in the Linux kernel before 5.8.4. Uninitialized memory leaks to userspace, aka CID-bcf85fcedfdd.