A "tempting target" refers to something that is very attractive or appealing to someone, especially if that person wants to take advantage of it or do something harmful. Full definition
You've got to think it's a pretty tempting target for malicious hackers. (lawyerist.com)
On paper, both films seem like tempting targets. (slantmagazine.com)
Making public corruption cases is always tough for prosecutors — there generally isn't tangible evidence like drugs waiting to be seized, quips Nyhan, the Dartmouth government professor — but elected officials still make tempting targets for ambitious prosecutors — particularly those as prominent as a state House speaker. (michaelbenjamin2012.com)