Starfield Skills -> Tech Skills
Security is a skill in Starfield located in the Tech skill tree that allows you to unlock harder-difficulty containers and doors.
Security Skill
Description: While the standardized digital locking mechanism is renowned for its security, any code can be broken with the proper training.

Security Ranks
Rank 1
You can attempt to hack Advanced locks, and 2 auto attempts can be banked.
Rank 2
You can attempt to hack Expert locks, and 3 auto attempts can be banked. Rings now turn blue when the pick can be slotted.
Rank 3
You can attempt to hack Master-level locks, and 4 auto attempts can be banked.
Rank 4
Expend a digipick to eliminate keys that aren’t required to solve the puzzle. 5 auto attempts can be banked.
Security Builds For Starfield
The Best Bounty Hunter Build in Starfield
The Bounty Hunter Build is the ultimate way to play Starfield if you enjoy bringing your own brand of justice to the Galaxy. Combining powerful weapons and abilities with custom ships and crafting, the Bounty Hunter is the perfect way to build your own destiny in Starfield!