Online political ads are still vulnerable to manipulation in this year's U.S. election. That's according to experts who warn that foreign governments and domestic grifters could try to influence ...

The ads are helpful for lesser-known candidates or smaller local and statewide campaigns that can now spend as little as $250 to reach hundreds or thousands of voters online, he said.

The ads are helpful for lesser-known candidates or smaller local and statewide campaigns that can now spend as little as $250 to reach hundreds or thousands of voters online, he said.