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Do Web Workers Increase (or Decrease) Security?

Tags:

javascript

security

web-worker

browser-security

Do web workers alleviate or intensify any of JavaScript's and the Browser Environment's known security issues?

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Noah Freitas Avatar asked Oct 09 '12 01:10

Noah Freitas

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Web Workers are a simple means for web content to run scripts in background threads. The worker thread can perform tasks without interfering with the user interface.

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How does a web worker work?

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1 Answers

According to the Mozilla Web Workers Security Review:

  • Workers execute in a tightly controlled sandbox.
  • No access to Components or other global JS components.
  • Only basic JS (Math, Date, etc.), timeouts, XHR, and importScripts.
  • Script loading is subject to the same restrictions as on the main thread (content policies, same origin restrictions, etc.).
  • XHR uses the same code as the main thread.

These answered all the security considerations I had.

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Stumpy7 Avatar answered Oct 27 '22 22:10

Stumpy7
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