Can stolen cryptocurrency be recovered?

Cryptocurrency transactions aren't reversible, and there is no magical way to 'hack' your money back, even if it's current location on the blockchain can be identified.

There are ways that stolen cryptocurrency can be recovered in some cases through a variety of investigative techniques in conjunction with cooperation and assistance of multiple parties, including crypto exchanges and law enforcement. 

This can involve blockchain forensic analysis, which involves tracing cryptocurrency through various wallets, and sometimes across multiple blockchains or sidechains, to various exchange accounts, which can lead to accounts and any funds they hold or receive to be frozen, in addition to providing more intelligence on the suspicious parties that may have been involved in the fraud, or have received money deriving from the fraud.

This can also involve investigative and open source research that need not involve blockchain analysis at all, such as identifying email addresses of suspects, and determining where else those email addresses have been used (e.g. a Twitter account) so that suspects potentially responsible can be pursued.

The bottom line is there is no definitive way that can ensure cryptocurrency will be recovered, but there are a variety of ways that cryptocurrency can sometimes be recovered, although it should be noted that partial recoveries are far more common than full recoveries. Full recoveries are incredibly rare.