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Bad SSL

Screenshot of badssl.com captured 2026-07-20
Page preview · captured 2026-07-20

Submission timeline

2007–2026

One slot for every year since HN launched. Height is that year's peak points; orange marks a 100+ point or 50+ comment breakout. Select a bar to open its strongest thread.

Top comments

An incredibly useful resource, well maintained by some of the best people in the PKI space, recently quoted by US-CERT [1] and so quick to use that I try it before starting to use any browser. A year ago it made me find out that the most popular iOS Tor browser doesn't check certificates at all. [2] (Use OnionBrowser instead.) [1] https://www.us-cert.gov/ncas/alerts/TA17-075A [2] https://twitter.com/FiloSottile/status/765230315132559360 For an easter egg, try to click on "Defunct"...

Ha. Their EV test (which they say you should be able to connect to, if your browser is "good") uses a certificate that expired Aug 10 2022: https://extended-validation.badssl.com

One thing they don't cover is name constraints; There's a bunch of ways that they can fail, and some surprising ways they don't - The default is permit all, so if you have a Web CA with name constraints, you should remember to add poison-pill constraints for e-mail addresses as well. It's of course not super easy for badssl to show such - They'd need an intermediate cert of their own, or close cooperation with a CA, but IRSG should…

Src code: https://github.com/lgarron/badssl.com Credit to moviuro for sharing @ https://news.ycombinator.com/item?id=10186516

The first top-level comment from each of the four biggest threads, in HN’s own order. Excerpts are shortened; open a comment for full context.

HN stats

Breakout years
2

100+ points or 50+ comments

Total points
613

reference only — not used in Hall rules or ranking

Total comments
127

reference only — not used in Hall rules or ranking

Every submission

DateTitle as submittedByPointsComments
2015-07-28Bad SSLsajal8330
2015-07-30Testing clients against bad SSL configsjsanc20
2015-09-09Bad SSLjaytaylor31
2015-12-01BadSSL: site for testing broken SSLjgrahamc30
2016-06-08Does your code verify SSL certificates?obi1kenobi20
2017-02-06Badssl.comhiq20
2017-03-18Bad SSLFirst breakout · Best threadaburan2840481
2019-12-09BadSSL – a tool for testing various errors with SSL/TLS serverdjanowski30
2020-08-16Badssl.comwoldemariam10
2022-09-29Badssl.com (2017)Hall inductionaaronbrethorst15034
2024-03-02Badssl.com (2017)Latest 20+ point returng4zj4011