Write-protecting.

Always write-protect your systems and program disks. 
By write-protecting these disks, you prevent anyone from tampering with them. Write-protecting also prevents disks from becoming contaminated with a virus. Write-protect tabs are easy to use and highly effective.

1st Security Agent

Mail Bomber

Security Administrator

PC Lockup

Access Lock

Access Administrator Pro

ABC Security Protector

1st Security Agent

Mail Bomber

Security Administrator for Windows

PC Lockup

Access Lock

Access Administrator

ABC Security Protector

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