Use a code editor that shows line numbers. Search for the following strings:
base64_decodeeval(functiondocument.write(gambling, casino, viagraIf you see these, the template is backdoored. free premium templates for blogger patched
Before you risk your blog's security, consider these 100% legal alternatives that look premium but cost nothing. Report: Analysis of "Patched" Free Premium Blogger Templates
If the risks scare you, here are 100% legal "free premium templates for blogger" that look patched but aren't. base64_decode eval(function document
Once you download a .xml file claiming to be a "free premium template for blogger patched," follow this exact safety protocol.