Link Data Security A/S is a Danish company which has been
marketing security products since 1984, when the first version
of Cop's Copylock for DOS was released. Even before that date,
we protected our own software (both CPM and DOS) with simpler
Diskette-based copy protection schemes -- in 1984, they
were unreliable and could crash hard disks.
On top of that, they were easily cracked.
Customer requests for a really good system caused us to enter
Our main principle is a belief in the strength of
individuality. You don't have to struggle to make things
unique - the differences are there if you measure carefully.
Each disk is recognizable by the way the bits are arranged
on the tracks. Each computer can be distinguished from
seemingly identical computers. No matter how precise a
copy is, a closer look will always reveal
From a broad range of hardware and consulting work we have,
over the years, concentrated our efforts in the highly
specialized field of data security.
Cop's Security Products are designed for software distributors
or others who want to secure their programs or data against
piracy. They are all easy to use, and do not require the
purchase of special equipment or diskettes.
Once protected, your program or data cannot be copied by
software utilities or hardware devices. Your software is
encrypted and debug-proofed to prevent reverse engineering and
hacking of all kinds.
Despite this high security, the protection is almost
transparent to the end-user.
Link protection systems are known and used throughout the
world, especially in areas where software piracy is a serious
problem. The first version of Cop's CopyLock was released in
1984. Since then, CopyLock has been improved and expanded to
encompass a comprehensive security line, most of which are
covered in these pages.
Using these modern tools, it is easy for program and data
distributors to fully control user licenses without excessive
administration or end-user problems. If your special
requirements are not fully covered by the products mentioned
below, we will be happy to assist you in tailoring a
Cop's protection systems offer these distinct
advantages over competing products:
These features, coupled with Link Data
Security's technical expertise and user support, have made
Link the choice of professional software houses.
- The key diskette cannot be copied by ANY software or
hardware. This includes the synchronized bit copiers found in
the Far East.
- Link Data Security is the inventor of the
"Machine Installation" principle that allows normal backup
and restore of hard disks without risk of data loss or hard
- Outstanding debug trapping and code security.
- Years of field testing having minimized compatibility
problems. Copylock protections run in Windows and OS/2 DOS
- Protected mode systems use the highest code
Link Data Security A/S Vesterbrogade 51 DK-1620 Copenhagen V.,