Validating information on the web

When people need advice about topics like health, careers, or relationships, the first place they often look is the internet.The same is true when parents and caregivers are seeking credible information about whether vaccines are safe for their children.

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Data from all potentially untrusted sources should be subject to input validation, including not only Internet-facing web clients but also backend feeds over extranets, from suppliers, partners, vendors or regulators[1], each of which may be compromised on their own and start sending malformed data.

Input Validation should not be used as the primary method of preventing XSS, SQL Injection and other attacks which are covered in respective cheat sheets but can significantly contribute to reducing their impact if implemented properly.

panel displays information about each digital signature in the current document and the change history of the document since the first digital signature.

Each digital signature has an icon identifying its verification status.

Vaccine Safety Net is now working to grow the number of evaluated websites, especially in additional languages, such as Arabic, or from a geographical location not yet covered by the network such as the Balkans.

The network is also expanding its evaluation criteria to cover social media channels.

Input validation is performed to ensure only properly formed data is entering the workflow in an information system, preventing malformed data from persisting in the database and triggering malfunction of various downstream components.

Input validation should happen as early as possible in the data flow, preferably as soon as the data is received from the external party.

WHO evaluates candidate websites using criteria defined by the Global Advisory Committee on Vaccine Safety – an independent, authoritative and scientific committee that advises the Organization on vaccine safety issues of global or regional concern that could impact national immunization programmes.

To become part of the Vaccine Safety Network, websites must be transparent in saying who owns, manages, and pays for the content they host, and also have processes in place to validate the sources of the information they publish.

SSL (Secure Sockets Layer) is the transaction security protocol used by hundreds of thousands of websites to protect online commerce.

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