Add UpSight Security Inc. to list of users

README.md

@@ -132,6 +132,7 @@ awesome list of [YARA-related stuff](https://github.com/InQuest/awesome-yara).
 * [TouchWeb](https://www.touchweb.fr)
 * [Trend Micro](https://www.trendmicro.com)
 * [UnpacMe](https://www.unpac.me)
+* [UpSight Security Inc.](https://upsight.ai/)
 * [Uptycs Inc](https://www.uptycs.com/)
 * [VirusTotal Intelligence](https://www.virustotal.com/intelligence/)
 * [VMRay](https://www.vmray.com/)