Phishing emails and social engineering scams were all it took for mobile phone store owner Argishti Khudaverdyan to breach the mobile provisioning systems of T-Mobile, AT&T, and Sprint to “unlock” phones from their network constraints — earning him more than $25 million in the process.

Now Khudaverdyan has been convicted and sentenced to 10 years in federal prison for wire fraud, money laundering, and identity theft, among other counts.