Cross-site request forgery
An attack inducing an authenticated browser to perform an unwanted action. Defences include CSRF tokens, origin checks and appropriate cookie settings.
Definition and sourcesKNOWLEDGE / FROM A TO Z
Glossary
Technology, explained clearly. Find a term, choose a letter or narrow the topic. Definitions include sources and their review date.
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Clear filtersCross-site scripting
Injection of content executed in a browser within a trusted site's context. Defences need context-appropriate output encoding and safe untrusted-HTML handling.
Definition and sourcesCrypto wallet
A tool managing accounts, keys and transaction signing on a blockchain. Assets are recorded on the network, not literally inside a device. Custodial arrangements determine who controls the keys.
Definition and sourcesCryptocurrency
A digital asset using cryptography and system rules to transfer and control units. Designs vary. Cryptocurrencies are not automatically fully decentralised or immune to influence by individual organisations.
Definition and sourcesCSS (Cascading Style Sheets)
A stylesheet language describing document presentation, including colour, typography and layout. It works with HTML and differs from programming languages such as JavaScript. The cascade determines which declarations apply.
Definition and sourcesCSS framework
Rules, tools or components that help style interfaces, offering ready-made elements or utility classes. A CSS framework does not replace HTML or guarantee a correct layout without proper implementation.
Definition and sourcesCTA (Call to Action)
A prompt for a specific action, such as booking a call or downloading a guide. It can be a button, link or text. It should explain the next step and deliver what it promises.
Definition and sourcesCumulative Layout Shift
A visual-stability metric measuring unexpected layout shifts. Scores reflect shift size and distance; reserving image space helps reduce the problem.
Definition and sourcesCustomer acquisition cost
Customer acquisition cost divides defined acquisition spending by new customers. Comparisons need consistent time periods and cost coverage.
Definition and sourcesCustomer experience
The overall customer experience across interactions with a business, from initial information to post-purchase support. It is not limited to website appearance.
Definition and sourcesCustomer insight
An evidence-based conclusion explaining customer needs or behaviour. A single observation or guess is not yet a validated insight.
Definition and sourcesCustomer satisfaction score
A satisfaction measure based on survey answers after a defined experience. Results depend on question wording, scale and respondents, so context is essential.
Definition and sources