It was previously claimed that more than 11,000 support tickets over faux emails designed to steal user data were logged during the three-day period, but NCSoft and ArenaNet have now downplayed the figure.
The studios claim that the number of tickets submitted was closer to 8,500, not all of which were related to hacking issues.
"Over the past three days we've received approximately 8,500 new support tickets related to hacked accounts and other blocking login issues," read a statement from the firms.
ArenaNet last week announced that Guild Wars 2's trading post is now available to all users.
Available exclusively for PC, Guild Wars 2 went live on August 25. It has since gone on to top the all-format and PC weekly charts.
> Read our review of 'Guild Wars 2'
Watch a trailer for Guild Wars 2 below: