Hard reset is kinda overtkill don't you think, and it's not helping at all?
Simplest method in unhacking.
Removed installserver.exe from C/sys/bin if you using it instead of installserver.rmp
Removed RomPatcher and Symantac Symbian Hack.
Been using a hacked symbian since 2007, so far the only threat i see is stupidity.
Viruses?
What's that? A new apps!
as he asked about the risk,there doesn't seem to be any risk at all.
And about unhacking ,there are several ways ,like flashing ofw,
my main point was that ,there is no such risk in hacking