The phrase "amassed information" is correct and usable in written English.
It can be used when referring to the collection or gathering of a large amount of information over time.
Example: "The researcher had amassed information from various sources to support her thesis."
Alternatives: "collected data" or "gathered knowledge".
He amassed information patiently and thoroughly, and would not be bullied into acting before he had mastered it.
The amassed information on combatants over 10 years amounts to the most detailed data ever assembled on battlefield trauma and its care, American military officers say.
You may believe there's no possibility of America turning into a thugocracy, that the amassed information – conversations, business dealings, personal health and financial data, media consumption, gun records and so much more – will never be systematically misused that way.
The data is held by police forces across England and Wales which have amassed information about people who dial 999 or non-emergency numbers to report their concerns or pass on information.
Much of their criticism has focused on Acxiom, an industry leader that has amassed information on the financial means, residential status and shopping habits of a majority of adults in the United States.
From his Jewish Documentation Centre, a cramped office stacked high with papers in a shabby part of Vienna, he amassed information on war criminals from contacts round the world.
Pettegree writes well and amasses information superbly.
Do we really want the police, not just spies, to amass information on every citizen's browser record?
People now can quickly amass information on product availability and pricing, helping them develop strategies to get the best deal.
Critics also said that the law gave the government wide-ranging powers to amass information on Internet users and to block Web sites.
Artists who I would describe in this way are students of popular culture and modern life who amass information almost as a PhD researcher might, and yet they are not cool observers, they are eccentric participants.
