Bicycle security refers to the measures taken to protect bicycles from theft and vandalism. Common methods include using high-quality locks, such as U-locks or chain locks, which are designed to resist cutting and picking. Additionally, securing the bicycle to a fixed object, like a bike rack, can deter thieves. Another important aspect of bicycle security is proper parking. Cyclists should choose well-lit, busy areas for parking and avoid leaving their bikes unattended for long periods. Registering the bicycle with local authorities or online databases can also help recover stolen bikes, making it easier to track down stolen bicycles.