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Tor is aware of a technical issue that allows JavaScript execution in the *Safest* [[security level of *Tor Browser*|doc/anonymous_internet/Tor_Browser#security-level]] in some situations.
Until then, do the following to completely disable JavaScript instead of setting the security level:
Open the address <span class="command">about:config</span> in *Tor Browser*.
[[!img news/version_3.13.2/about-config.png link="no"]]
Click the **I accept the risk!** button.
At the top of the page, search for <span class="command">javascript.enabled</span>.
Double-click on the **javascript.enabled** line in the results to set its value to **false**.