Local shared object

"Sol file" and ".sol file" redirect here. For mathematical data format, see Sol (format).
For other uses, see .sol.

A local shared object (LSO), commonly called a Flash cookie (due to its similarity with an HTTP cookie), is a piece of data that websites that use Adobe Flash may store on a user's computer. Local shared objects have been used by all versions of Flash Player (developed by Macromedia, which was later acquired by Adobe Systems) since version 6.[1]

Flash cookies, which can be stored or retrieved whenever a user accesses a page containing a Flash application, are a form of local storage. Similar to cookies, they can be used to store user preferences, save data from Flash games, or track users' Internet activity.[2] LSOs have been criticised as a breach of browser security, but there are now browser settings and addons to limit the duration of their storage.

  1. ^ "What are local shared objects?". Security and privacy. Adobe Systems. Archived from the original on 2010-05-29. Retrieved 2007-12-05.
  2. ^ "When the cookies crumbled, so did your web anonymity". The Guardian. 2014-10-04. Archived from the original on 2023-06-05. Retrieved 2023-12-28.