Nah, we're safe
Alien's receiving the webgasm will conclude that this could not possibly come from a sentient life form, and start looking for errors in their analysis software, or check they weren't getting stray signals from some passing Teaser. You know, rich kids with nothing better to do than finding planets like ours, landing next to some poor guy who nobody is ever going to believe and strut around wearing silly antennae making bepp-beep noises (childish really)