Not every company in the US is actively colluding with the government. Assuming DDG is telling the truth about not keeping any logs, then its service should be no less secure than if it were situated in any other country.
Please don't keep it to yourself! What is this privacy-protecting search engine that you've been using that is immune to US or other intelligence agencies' snooping?
If they snoop your logs, but you have no information on your users then they will get nothing.
If they can snoop your traffic live than pretty much yes, anything US based is vulnerable, but at least my information is not being sold and traded between private companies.
I mean that the guarantee from an US-based company that they won't track you is meaningless, because they can be ordered in secret court to hand over all their information with a gag order.
After that the only way for us to know would be a whistleblower. And even then we would only know that we are unsafe, not that we are safe.
Except DuckDuckGo doesn't hold that information in the first place [1]. So a request by the government for information on a user will have very little information.
