The new rules are likely to reduce the number of unauthorized changes, but could also make it more difficult for consumers to change long-distance carriers.

Unfortunately, the engines built by the Moscow factory were of very poor quality because the management there had made unauthorized changes to simplify production.

This is usually done in order to prevent unauthorized, unwanted or accidental changes to the domain name.

A related issue is the modification of documents, so that unauthorized changes can be made and distributed on what appears to be authentic official information.

Violators (those who make unauthorized changes) can be fined as much as $250 a day.

Modding may be an unauthorized change made to a software or hardware to a platform in gaming.

Waltrip fired said crew chief for the unauthorized change that neither he or anyone else authorized.

To prevent tampering or unauthorized changes to the original document, encryption is used.

We are working with our impacted members directly to resolve any unauthorized changes to their accounts.

In particular, unauthorized changes are periodically searched for.