The phrase "are technically forbidden" is correct and usable in written English.
It can be used when discussing rules, regulations, or restrictions that may not be explicitly stated but are implied or understood within a certain context.
Example: "While many people engage in this activity, it is important to note that such actions are technically forbidden under the current regulations."
Alternatives: "are officially prohibited" or "are not allowed by rules".
Priests played prominent roles in Mexico's past, too, although they are technically forbidden today from talking politics.
After years of struggling to contain the markets, which are technically forbidden, North Korea took its boldest step yet by abolishing its old bank notes in late November.
North Korea has vowed to eradicate the private markets, which are technically forbidden but have flourished since the famine of the mid-1990s.
College recruiters are technically forbidden from making contact with prospects until their junior year, but Bryant had already heard "whispers" from Rutgers and South Carolina, among others, and she was preparing her son for what she had been warned was likely to be the most intense solicitation of any athlete ever to come from New Jersey.
Candidates are technically forbidden from communicating strategy in private with independent groups, but they have found numerous ways to maneuver around the rules.
As late as the 1850s foreigners were technically forbidden from setting foot on its soil.
Talking to the soldiers was technically forbidden, he said, but added, "I know from the soldier's face whether it's possible or impossible to talk to him".
And even though the behavior would be technically forbidden, he openly socialized with his girlfriend, a photojournalist who led an independent life.
That became third when Jarno Trulli slid off the road, leaving Hamilton with no alternative but to overtake the Toyota, even though such a move is technically forbidden in a safety car situation.
Steinbrenner, who was connected to the Yankees from 1973 until his death in 2010, was technically forbidden from being involved in team operations in 1974, but Bill Madden, the longtime baseball columnist for The Daily News and the author of a biography of Steinbrenner, said that Bowie Kuhn, the commissioner at that time, "pretty much looked the other way".
Members of the United Nations are, at least technically, forbidden from doing what the commission recommends: regulating drugs as opposed to outright prohibiting them.
