Some organizations have found ways to deter data breaches while still allowing employees to use the devices. Security professionals suggest a radical approach to locking down USB flash drives. The City of Columbus uses classification software to categorize files and assign encryption on the fly. Turkcell is one of the largest wireless carriers in Turkey, with more than 30 million subscribers, 2,800 employees, and about 5,000 computers installed in the corporate office in Istanbul. The city is using an “active/fine-grained” approach, where every sensitive file is encrypted.”]
Source: https://www.csoonline.com/article/2130769/how-to-prevent-thumb-drive-security-disasters.html