Tether is praised for its proactive and rapid response to freezing stolen funds, in contrast to Circle's more reactive, legally cautious approach.
Tether's effectiveness stems from formal, pre-established partnerships with professional freeze-and-recovery groups like Zero Shadow and Steel 911, as well as relationships with law enforcement.
Circle, despite being a US-regulated Money Services Business (MSB), typically waits for official court orders before acting, which can allow stolen funds to become irretrievable.
A key operational difference: Tether employs a "50% threshold" rule, where they freeze an address only if more than 50% of the funds are proven to be illicit.
Tether's legal jurisdiction is based in El Salvador (Tether Global), which provides regulatory ambiguity and operational flexibility, while Circle is subject to strict US regulations like the Bank Secrecy Act.
The analysis suggests Tether operates on a combination of legal obligation and its own "moral code" or risk-based analysis of what should be done, rather than strict legal compliance alone.
The dynamic is not a simple "Tether is more compliant"; each company has strengths in different areas (e.g., Tether on victim recovery, Circle on sanctions/AML adherence).
The primary market implication is that the "unregulated" stablecoin may offer better victim protection in specific hack/theft scenarios due to its speed and willingness to act.