Posting on the EU PS Blog, the platform holder confirmed that PlayStation Home, online play, friends lists and chat functionality are soon to return.
Movie rentals, Music Unlimited, downloaded games and account management will also be reintroduced when the platform goes back online.
Access to the PlayStation Store is unlikely to be among the initial returned services as Sony said that it will reopen at some point "this month".
The studio also outlined the additional security measures it has brought in to ensure that the problem does not recur. Additional firewalls have been introduced and data protection levels and encryption have been enhanced.
Automated software monitoring and configuration management have also been implemented to help defend against new attacks, and improved detection software brought in to aid in their identification.
To compensate users for the disruption, Sony is offering a Welcome Back pack, which includes a 30-day subscription to PlayStation Plus. Current PS Plus users will be given an extra 30 days and free region-specific content. Qriocity subscribers will also receive an extra 30 days.
Addressing concerns that users' credit card information is at risk, the firm said that there is no evidence that any credit card information has been stolen, but urged account holders to "remain vigilant".
37 million PS3s and 16 million PSPs are connected to PSN worldwide. The service went down on the evening of Wednesday, April 20 as a result of hacker activity.