[VargardObyron]

he could be potential leak, they could do it this way so rest knows how leak will end for them.

Easy and effective.

[Daniel_Newby]

The general practice is to leave known spies operating and use them for counterintelligence. No other explanation is consistent with the small number of prosecutions and premature deaths.

[snowwrestler]

Counterintelligence is worthless if the plan is to leak to the public, rather than to the intelligence apparatus of another nation.