that doesn't help at all, and in fact makes it worse - with a popular vote you can just hack one or two communities with very large populations (i.e. LA and NYC), and change or cast enough votes to cancel out about 30 other states in total.
You can't trivially shift huge numbers of votes without getting caught. To get away with it, you'd have to shift small numbers of votes in specific locations. But with a popular votes, small numbers of votes don't make a difference. Reliably shifting 1% of the vote in Wisconsin, Michigan, Ohio, Arizona, would throw an election one way or another under the current system. Switching 1% of the vote in Los Angeles and New York wouldn't reliably change anything with a popular vote system.