Definition(s)
Penetration
Successful unauthorized access to a protected system resource.
Source: DNVGL-RP-G108, Cyber security in the oil and gas industry based on IEC 62443, DNV GL, September 2017. Global Standards
Penetration
An unauthorized act of bypassing the security mechanisms of a network or information system.
Adapted from: CNSSI 4009
Source: NICCS™ Portal Cybersecurity Lexicon, National Initiative for Cybersecurity Careers and Studies (https://niccs.us-cert.gov/glossary) as of 11 November 2015, Global Standards