Criminals who steal computer equipment in office buildings may use a variety of tricks to pretend to be maintenance personnel. The following are some common methods and corresponding prevention recommendations.： --- ###**Common camouflage tricks** 1. **Forged identity documents** - Use fake work permits, uniforms or forged maintenance company logos. -Claiming to be an “IT outsourcing service provider” or “equipment maintenance contractor”, but unable to provide specific contact information. 2. **Take advantage of the time difference** - Choose to enter during off-peak hours (such as lunch break, early morning or after get off work) to reduce the risk of being questioned. -Falsely claiming “emergency maintenance” or "system upgrade” to create a sense of urgency to avoid verification. 3. **Tool camouflage** - Carry seemingly professional tools (such as toolboxes and testing equipment), but they are actually used to quickly disassemble the computer. -Push handling equipment (such as trolleys, suitcases) in order to quickly transfer stolen goods. 4. **Social engineering** -Pretend to be a familiar employee or superior, for example“ "Manager Zhang asked me to pick up his faulty computer. ” -“Notify” a certain department in advance by phone or email that maintenance personnel will visit, but in fact, the communication is forged. 5. **Target selection** - Target unattended meeting rooms, temporary workstations, or new employee areas. -Specially select equipment with the “to be repaired” label to reduce suspicion. --- ###**Preventive measures** 1. **Strict access control and verification** -All visitors are required to register their ID documents and verify the repair appointment through the internal system (such as contacting the administrative department for confirmation). -Set up an escort system for temporary visitors, especially when leaving with equipment. 2. **Double confirmation mechanism** -Maintenance personnel must provide the work order number and verify their identity through official channels (such as contacting the company's customer service by phone). -It is forbidden to enter sensitive areas alone, and must be accompanied by employees throughout the process. 3. **Technical means** -Install anti-theft tracking software or physical locks (such as Kensington locks) for high-value equipment. -Install surveillance cameras in the office area and clearly identify the "monitoring area" to deter crime. 4. **Staff training** -Regularly remind employees to be wary of unfamiliar maintenance personnel, especially those who actively mention high-level names or emergencies. -Establish a reporting process to encourage employees to report suspicious behavior. 5. **Asset marking and management** -Put a conspicuous company asset label on all equipment and record the serial number. -Regularly inventory equipment, especially easy-to-carry laptops, tablets, etc. --- ###**Emergency response** -If you find a suspicious person, you can politely ask for details (such as “What is your service ticket number?"). I need to check”) and contact the security department immediately. -After discovering that the device is lost, remotely lock or erase the data as soon as possible, and call the police to provide surveillance video. By combining process control, technical protection and employee awareness, the risk of such theft can be greatly reduced.