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caseyjohnellis

Sydney, Australia

hacker/hustler. chairman/founder/cto @bugcrowd and cofounder @disclose_io. husband, dad, musician, believer. pioneer of crowdsourced security as-a-service.

26

Dec

2026 security predictions

5 min read

16

Dec

2025 security predictions retrospective

6 min read

26

Nov

First Principles: Bad guys are humans, they're creative and driven, and they don't quit.

2 min read

13

Aug

Founders Helping Founders: When Known Vulnerabilities are Life or Death

2 min read

27

May

What You Give Away Might Be Worth More Than What You Keep

1 min read