Hello,
For the question concerning anti-viruses and BGT, the problem doesn't
target BGT only. With the playroom, I have the same problem, many
players have already reported that the installer mysteriously
disappeared just after they have downloaded it.
Having data appended to the executable isn't the only criteria in the
checklist of anti-viruses. The playroom doesn't use and need to do such
thing, and is sometimes still flagged.
One of the most significant criterias today are signature and popularity.
As soon as your program isn't signed, it is flagged, unless it is
popular enough; popular meaning here that enough people already use the
software at the time you download and install it, with of course the
same executable (with the same hash value)
Of course, nobody knows how many people are required to be popular, and
nobody knows what to do or not do to be effectively counted.
From anti-virus perspective, it's good to leave doubts: if we knew the
criterias exactly, then it would be possible to break the system
somehow, making it totally useless.
That's why, for example, each time I release a new playroom client, that
new version is directly flagged by anti-viruses as being unpopular.
After a while nobody have problems anymore because enough people
downloaded it. And at next release, problems begin again.
For crazy party and other BGT games, data appended to the executable
still remain a flagging ccriteria forever.
This is certainly due to the fact that, historically, appending data to
the executable was the way to produce self-extracting archives. With an
archive, you can make what is called a zip bomb, i.e. a small especially
crafted archive that, when extracted, become extraordinary large
(thousends of petabytes), filling the entire hard disk with garbage and
making the system crash due to lack of space. IN short, that's a quite
easy way to create a kind of virus.
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