Register Your Bike
Sadly bike theft is an issue in Seattle. Luckily, YOU can take measures to either help secure your valuable bicycle or finding ways to hopefully locate and recover your bike.
FIRST, make sure to grab a lock and always secure your bike to a stable post. SECOND, take a few minutes to register your bike either through services like Bike Index or Project 529
More information on securing your bike can be found at the Seattle Department of Transportation website.