The phrase "acts as informer" is not entirely correct in standard written English; it should be "acts as an informer." You can use it when describing someone who provides information, typically in a context involving secrecy or intelligence.
Example: "In the investigation, she acts as an informer, providing crucial details to the authorities."
Alternatives: "serves as an informant" or "functions as a source of information."
There have been various reports of gay Palestinians being targeted or pressurised by Israeli intelligence to act as informers.
In the wake of the attack it emerged that Adebolajo and Adebowale were both known to MI5 – and may have been approached to act as informers.
The gang, which was founded in 1964, has a reputation for assaulting or killing anyone it considers a threat, including those who acted as informers, Mr. Mrozek said.
"We would capture government soldiers, take their weapons and then drive them back to their home military bases safely so they will then act as informers for us," he said with a smile.
Beginning today, a group of software companies, the Business Software Alliance, is appealing to disgruntled employees in New York and four other cities to act as informers if their companies are using unlicensed copies of computer software.
In the aftermath of the 2011 uprising, vendors were often used by police to attack protesters or acted as informers.
By trial, by taking of depositions, by other devices, the informer may force the premature disclosure of the Government's case, and it is certain that by collusion between one who acts as an informer and the party guilty of fraud the latter could obtain a disclosure of the case against him.
Another former city manager who acted as an informer has not been indicted.
Paul Hofmann, a Viennese who resisted the rise of Nazism in his homeland, acted as an informer for the Allies while serving on the staff of the German commandants of occupied Rome during World War II and later became a foreign correspondent for The New York Times and a prolific author of travel books, died Tuesday in Rome.
Children, it will have been noted, play a fraught part in these men's lives, and soon it's clear why: for we also come to meet, in awful flashbacks to 1990, Connor Walshe, a glue-sniffing 15-year-old schoolboy and petty criminal who, with a child's need for human affirmation and a child's incomprehension of risk, acted as an informer for the British authorities — then disappeared, permanently.
