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- Here's info on all the viruses I've come across so far. Mail me if you can
- add to the list.
-
- Alan
-
- ....
-
-
- Viruses
-
- A number of viruses have become known within the Acorn world and staff
- at Acorn have been investigating how we may best help developers in
- this area. The following information may be used as a guideline.
-
- The Known Viruses
-
- 1) Extend
-
- This lives in applications, using one of eight possible names. It
- modifies/creates a !Boot file to load itself. Apart from claiming more and
- more memory (eventually causing the system to run out of memory) it is
- harmless, but very contagious.
-
- Quick Check : Press <F12> and type 'help extend' - a message of the form
- 'Module is...' indicates that it's loaded.
-
- 2) Icon (also known as Filer)
-
- There are a number of variants of this around - two have been encountered
- already. Both use !Boot files to propagate. One variant does nothing apart
- from spread itself. The other generates a nonsensical error message when it
- is first loaded.
-
- Quick Check : a file called Icon inside an application which is filetyped as
- a sprite, but is actually BASIC.
-
- 3) FF8 (also known as ArchieVirus)
-
- This is by far the oldest virus, but various bugs in its coding make the
- chances of it successfully infecting other programs quite small.
-
- Unlike the other viruses discussed here, it works by merging itself with
- files typed FF8 (Absolute).
-
- On the 13th of the month, any infected application will fail to run, giving
- the message 'Archievirus strikes again'.
-
- Quick Check : Load a file into !Edit, and look for '1210' at the end of the
- file (though 'Hypo1210' indicates an innoculation instead).
-
- 4) RISCOSext (also known as Thanatos)
-
- This is by far the worst of the viruses discussed here. It has various nasty
- things on particular dates, with a random chance of something happening at
- any time. Any outbreaks of this virus should be treated rapidly to avoid any
- chance of data loss.
-
- Quick Check : Look in the Task Manager display for 'Thanatos'.
-
- 5) DataDQM (also known as VigayVirus)
-
- This one causes the screen to judder an increasing amount during each
- Thursday.
-
- Quick Check : An application called 'TaskManager' - not to be confused with
- the real 'Task Manager' which will appear in the list of module tasks.
-
- 6) CeBit
-
- Aside from infecting applications (via the !Boot file as usual) it will stop
- proceedings on every 16th infection to display a message from 'Devil, The
- Lord of Darkness'. This virus was discovered in Germany, and is not thought
- to have spread to the UK yet.
-
- Quick Check : press <F12>, then 'help tlodmod'. A message of the form
- 'Module is...' shows that it is loaded.
-
- 7) MyMod
-
- This is a harmless virus, which will display a message on each Friday 13th.
- It can exist in two forms, the first being the trojan used initially to
- release it, and the second being the form in which it infects applications.
-
- Quick Check : press <F12> then 'help mymod'. A message of the form 'Module
- is...' shows that it is loaded.
-
-
- --------------------------------------------------------------------------
- aglover@acorn.co.uk - Moderator of comp.binaries.acorn/comp.sources.acorn
- Mail submissions to submit@acorn.co.uk, other mail to moderator@acorn.co.uk
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