Threshold and Weight in TRON Permissions
Two numbers decide how many keys — and which combinations of them — are enough to authorize a transaction from a TRON account.
Weight: how much each key counts for
Every key listed in a permission has a weight — a number representing how much that key's signature contributes. A default, unmodified account has a single key with a weight of 1.
Threshold: how much is enough
The threshold is the total weight required before a transaction is considered authorized. If two keys each have a weight of 1 and the threshold is 2, both signatures are required — neither key alone is enough.
Why the combination matters
A key with unusually high weight relative to others, or a threshold that a single foreign key already satisfies on its own, means that one key effectively has full control — even if it's technically just one entry among several. This is exactly the pattern to look for when checking whether an account was tampered with.