# Anonymous users can only change own data

<table><thead><tr><th width="138">Check ID</th><th>DOM_0003</th></tr></thead><tbody><tr><td>Category</td><td>Security</td></tr><tr><td>Summary</td><td>Anonymous users should not be able to change any data in an app except for data that belongs to them. Without this restriction hackers can change the data of other users.</td></tr><tr><td>Options</td><td>This check does not have any options.</td></tr><tr><td>Pass</td><td>Anonymous users only have read/write access to entities that have the following XPath constraint: <strong>[(attribute or association path)='[%CurrentUser%]']</strong></td></tr><tr><td>Fail</td><td>Anonymous users have read/write access to entities that are not constrained to themselves.</td></tr></tbody></table>