Cobalt.io is ranked 5th in Penetration Testing Services while HackerOne is ranked 2nd in Penetration Testing Services. Cobalt.io is rated 0.0, while HackerOne is rated 10.0. On the other hand, the top reviewer of HackerOne writes "I was pleasantly surprised by the variety of security issues which were reported, some of which I had never considered or even knew existed". Cobalt.io is most compared with Cymulate, Fortinet Penetration Testing Service, Offensive Security Penetration Testing Services and NetSPI Resolve, whereas HackerOne is most compared with Bugcrowd, Intigriti, Synack, YesWeHack and Pentera.
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