<?xml version="1.0" encoding="US-ASCII"?>
<!-- Generated by CompSci Transform (tm) - http://www.compsciresources.com -->
<!-- Created: Wed Apr 23 14:12:51 UTC 2025 -->
<linkbase xmlns="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
<!-- [WMV6][XcpuxYn59dz7vgYynUDuwG7r97K2jUTysl7vcz0lJt9uqgO9qQHmt9BQ98lPQIywLaIigabi7Wkv/iXDcq2Ki/sdvPZzWqWwsoiiRn57yifdZMSpqM7SqEdho01xoJnW7DBgJm0uTrgs2cSAG2UXxDGjNpMa+ANNz0uA5lmS6iEjFRIQ+j/gO2k4FXbcNVhTi6+271OCsxhrgF3N9ggtteFQ47VZBHDlG2zd8pjJ/wh22WP86qfzBq2k/r5B1sT9gNnTeQiyyQ2MsMyRiuTUb5zTpmrYW8K13GQGU6KY/2A9atJWauuTDUQZx3eGXBzRgQKK6QXr1xU=] CSR-->
    <loc xlink:type="locator" xlink:label="qlys_PhilippeFCourtotMember" xlink:href="qlys-20250611.xsd#qlys_PhilippeFCourtotMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="qlys_PhilippeFCourtotMember_lbl" xml:lang="en-US">Philippe F. Courtot [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="qlys_PhilippeFCourtotMember" xlink:to="qlys_PhilippeFCourtotMember_lbl"/>
    <loc xlink:type="locator" xlink:label="qlys_SumedhSThakarMember" xlink:href="qlys-20250611.xsd#qlys_SumedhSThakarMember"/>
    <label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="qlys_SumedhSThakarMember_lbl" xml:lang="en-US">Sumedh S. Thakar [Member]</label>
    <labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="qlys_SumedhSThakarMember" xlink:to="qlys_SumedhSThakarMember_lbl"/>
  </labelLink>
</linkbase>
