Jacob B

@jacob_buczak

Poland

English, Polish

About me

I'm an ex-EY cybersecurity consultant and penetration tester. I found CVE 2025-20120 in Cisco Prime Infrastructure and EPNM products. I used to work in both offensive and defensive security for EY's clients including a Fortune 500 Europe company, including providing original OSINT research during major ransomware incident by a previously undocumented group. During my work as a pentester I found numerous vulnerabilities in applications used in government, finance, law, accounting and big corporate sectors. I have also implemented essential cybersecurity measures like backups, EDR and SIEM... Read more

Skills