Jagex has posted to its official forums the news that both modern RuneScape and its classic servers are in the midst of service disruption attacks. Moderator Tyran explained:
As you may be aware, we're currently experiencing service disruption across both game and web services, this is affecting both RuneScape and Old School RuneScape.The studio warns players to avoid high-risk content where items might be lost, but customer service will investigate items already compromised by the outages. A large-scale rollback is not currently planned; Moderator Ronan posted, "Unfortunately, Old School RuneScape does not have the tool required to roll back or to confirm what items were lost by players and so it will not be possible to refund any lost items."
We are aware that RuneScape (as well as other games) are being targeted by attacks which are causing connectivity issues for our players.
We are doing everything we can to mitigate any impact on your gameplay experience - our Systems Team are currently working to improve stability across our core hosting platform to improve the situation.