請依下文回答第 36 題至第 40 題：
       Smartphones are small devices constantly online sending and receiving signals, so they are always a target forcriminals. To protect your smartphone from hackers and __36__ , set a long passcode with both numbers and letters.Consider using fingerprint scanning or face ID, __37__ gives an even more personalized security blanket. Avoid freepublic Wi-Fi. Use only your private cell connection and __38__ Wi-Fi on your mobile phone whenever you are in apublic place. Besides, avoid sharing a ton of revealing information about yourself on social networks. Avoid listingspecific addresses, work locations, phone numbers, family names, and other details hackers can use to track you. __39__ ,don’t store personal information, documents, or files on your phone, and limit the number of geotagged photos in yourCamera Roll. Eliminate __40__ emails from financial and work-related accounts. Also, make a habit of keeping yourphone relatively pristine by offloading images and documents to your computer.
【題組】36
(A) advocates
(B) counterparts
(C) intruders
(D) vendors