Files with sec extension may also be found as secured "keyring" from the Pretty Good Privacy software. Contacts saved passwords.
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.SEC file extension - Pretty Good Privacy secret key ring file
What is sec file? How to open sec files?
File type specification:
File extension sec is associated with the Pretty Good Privacy (PGP) application used to encrypt and decrypt important data.
A .sec file contains encrypted private keys used to decrypt data protected by Pretty Good Privacy software.
The default software associated to open sec file:
Pretty Good Privacy 
(obsolete software)
Company or developer:
Symantec Corporation
Pretty Good Privacy is used to protect and share information online. Pretty Good Privacy was developed to help human rights organizations communicate safely via electronic mail. It was later acquired by Symantec.
List of software applications associated to the .sec file extension
Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open sec file, edit sec file, convert sec file, view sec file, play sec file etc. (if exist software for corresponding action in File-Extensions.org's database).
Hint:
Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting sec files.
Programs that can create sec file - Pretty Good Privacy secret key ring file
Programs supporting the exension sec on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about Pretty Good Privacy for create sec file action.
Microsoft Windows:
Pretty Good Privacy (obsolete/discontinued)
