Potential Subdomain Takeover on IBM.com domain.
HackerOneIBM2026-03-24
Web
High
BUG BOUNTY WRITEUPS
Subdomain takeover writeups
Dangling DNS records pointing at cloud services nobody owns anymore, and how researchers claimed them.
25 reports and writeups from 2024 to 2026. 23 carry a severity from the disclosing platform, 7 of them rated High or Critical. Last updated 2026-10-30.
Latest Subdomain takeover reports
Search and filter all writeupsBug Report #23JAN136 (subdomain takeover via shopify )
HackerOneMars2025-09-02
Web
High
Bug Report #23JAN135 (subdomain takeover via shopify )
HackerOneMars2025-09-02
Web
High
Subdomain takeover on a subdomain under firefox.com
HackerOneMozilla2025-07-03$500 bounty
Web
Medium
[ addons-preview-cdn.mozilla.net ] A subdomain takeover is available via unregistered domain in Fastly
HackerOneMozilla2024-12-06$500 bounty
Web
Medium
Subdomain takeover in Gitlab pages
HackerOneGitLab2024-10-09
Web
Low
Subdomain takeover in GitLab Pages [george.ratelimited.me]
HackerOneRATELIMITED2024-08-11
Web
High
Possible Subdomain Takeover For Inbound Emails
HackerOneSmule2024-08-07
Web
Not rated
Subdomain takeover ██████
HackerOneU.S. Dept Of Defense2024-07-26
Web
Critical
Subdomain takeover on one of the subdomains under mozaws.net
HackerOneMozilla2024-07-25
Web
Medium
Subdomain takeover on one of the subdomains under mozaws.net
HackerOneMozilla2024-07-25
Web
Medium
Subdomain takeover ████████.mil
HackerOneU.S. Dept Of Defense2024-06-27
Web
Critical
Subdomain Takeover via Host Header Injection on www.█████
HackerOneU.S. Dept Of Defense2024-06-18
Web
Critical
Subdomain takeover on one of the subdomain under mozgcp.net
HackerOneMozilla2024-02-11
Web
Medium
Subdomain takeover on one of the subdomain under mozaws.net
HackerOneMozilla2024-02-11
Web
Medium
Subdomain takeover on one of the subdomain under mozaws.net
HackerOneMozilla2024-02-11
Web
Medium
Subdomain takeover on one of the subdomain under mozaws.net
HackerOneMozilla2024-02-11
Web
Medium
Subdomain takeover on one of the subdomain under mozaws.net
HackerOneMozilla2024-02-11
Web
Medium
Subdomain takeover on one of the subdomain under mozaws.net
HackerOneMozilla2024-02-11
Web
Medium
Subdomain takeover on one of the subdomain under mozaws.net
HackerOneMozilla2024-02-03
Web
Medium
Dangling CNAME/Orphaned CNAME leads P2 on Google VRP
MediumGoogle2024-01-19
Web
Not rated
Subdomain takeover on one of the subdomain under mozaws.net
HackerOneMozilla2024-01-04
Web
Medium
Subdomain takeover on one of the subdomain under mozaws.net
HackerOneMozilla2024-01-04
Web
Medium
Subdomain takeover on one of the subdomain under mozaws.net
HackerOneMozilla2024-01-04
Web
Medium
Subdomain takeover on one of the subdomain under mozaws.net
HackerOneMozilla2024-01-04
Web
Medium
Every entry links to the original report or article. Secure Hyperloop doesn't copy the content. Severity comes from the disclosing platform (HackerOne). Writeups without a platform rating show "Not rated". The index has 2,810 items in total.