Learning

An enterprise asks for “one security scanner”, but the real requirement normally contains several independent problems:

For several years, the industry prepared for one clear scenario: Chrome would gradually remove third-party cookies, while Privacy Sandbox APIs would replace some advertising, measurement and identity use cases.

You enter the same address:

DNS and TLS form one operational chain of trust even though they solve different problems. DNS answers where a service is located. TLS confirms which server the client reached and whether the connection is protected. A mistake in either layer can invalidate an otherwise correct setup.

HTTP security headers let a server tell the browser how scripts may be loaded, whether a page may be embedded, which device capabilities may be used, how much referrer information should be sent, how MIME types must be interpreted and whether the site may ever be reached over plain HTTP. A well-designed policy reduces the impact of several classes of attacks, including cross-site scripting, clickjacking, MIME confusion, XS-Leaks and unsafe cross-origin embedding.

Image format still matters. A 1.8 MB hero photograph can be the main cause of poor LCP, while a lossless PNG used for photographic content can be many times heavier than a carefully encoded WebP or AVIF file. On the other hand, aggressively converting every asset to the newest format can reduce text sharpness, increase build cost or cause problems in older clients and external publishing systems.

A good website audit is not a single Lighthouse score or a list of several dozen automated warnings. It should answer four questions: can a search engine correctly discover and understand the website, can a user complete their task efficiently, is the website fast enough, and does it expose the owner or visitors to unnecessary risk?

AI coding tools are no longer limited to intelligent autocomplete. In 2026, some suggest the next line of code, others can analyse an entire repository, run tests and prepare a patch, while still others execute several tasks in parallel in the cloud.