The security team has decided that this package will not receive security support for Jessie which makes the package suitable only for trusted content. The decision has been made due to the amount of already outstanding known vulnerabilities [1] and the maintainer team's forecasted lack of manpower to deal with new and existing security problems. Providing security support for the package is not impossible but requires people who can back-port and review security related fixes from upstream's source code repository. If you would like to see full security support for libv8 [2] in Jessie+1, please consider joining the maintainer team or help them in other ways. [1] https://security-tracker.debian.org/tracker/source-package/libv8 [2] https://packages.qa.debian.org/libv/libv8-3.14.html