See:
Outdated Word Press plug-ins: WordPress Plugins
The following plugins were detected by reading the HTML source of the WordPress sites front page.
jetpack 4.3.2 latest release (5.3) Update required
https://jetpack.com
gallery-plugin 4.4.6 latest release (4.5.2) Update required
https://bestwebsoft.com/products/wordpress/plugins/gallery/
Plugins are a source of many security vulnerabilities within WordPress installations, always keep them updated to the latest version available and check the developers plugin page for information about security related updates and fixes.
F-Grade status: https://observatory.mozilla.org/analyze.html?host=www.tickenham.org
Subresource Integrity (SRI) is not implemented, and external scripts are loaded over http → http://retire.insecurity.today/#!/scan/be471f1a5ed365eea2a076d6ac4a9bbfdec397a63000ccc0e1a3e7a0d3d29302
function _classCallCheck error and other issues: http://www.domxssscanner.com/scan?url=http%3A%2F%2Fwww.tickenham.org
[script] stats.wp.com/e-201739.js info: [decodingLevel=0] found JavaScript error: undefined function b.attachEvent error: undefined variable b info: [element] URL=wXw.tickenham.org/undefinedjs suspicious: maxruntime exceeded 10 seconds. and another error [quote]found JavaScript
error: undefined variable jQuery error: undefined variable WPGroHo error: undefined function jQuery.extendMentioned this issue earlier for another website here: https://forum.avast.com/index.php?topic=200724.0
Blocked for me with uBlockOrigin = -http://stats.wp.com/e-201739.js’%20async%20defer
polonus (volunteer website security analyst and website error-hunter)