We usually refer to spies who infiltrate our government as "moles." These spies are also very valuable; they are usually infiltrated at great cost by the enemy, and their identities are even more verifiable than those of our own personnel, making them highly secretive.
A spy team may have one or several moles, but only one carrier pigeon. Because of its importance, Fu Cheng's capture will certainly alert the other members of the team.
This reaction time will be very short. They will then quickly enter a dormant state, and only after confirming that it is safe will they obtain the activation command through other pre-arranged means before starting a new operation.
This method of operation will exponentially increase the difficulty of solving this case, and may even make our chances of success extremely slim.
Ning Zhiheng then realized that Yanagida Yukiki played a very important role in the organization. He then asked, "What are the common methods that moles use to transmit messages to carrier pigeons?"
Huang Taoguang then patiently explained: "According to what we know, there are generally several ways to transmit intelligence."
The first method is direct contact. Two people meet and exchange intelligence directly. This method is direct and effective, but also quite dangerous. Using this method implies that both parties know each other, and may even know each other's hidden identities. If one link in the chain fails, the trail can be followed to find other members of the organization. This is also the most basic method.
The second method is written communication, where the mole sends letters directly to carrier pigeons. Following pre-set codes and text order, the intelligence content is embedded within a regular letter and delivered directly through the post office. This method offers good security but has significant drawbacks. Delivery times are very long because current postal regulations are not strict, leading to frequent delays and even loss of mail. Once such an incident occurs, it is completely uncontrollable, so this method is generally not used for intelligence transmission.
The third method involves indirect transmission, typically using a specific, concealed location, often called a "dead mailbox." The mole places the intelligence in this mailbox, which is, of course, a very secretive location. To minimize the chance of the mailbox being discovered, the carrier pigeon cannot frequently check for intelligence. Therefore, the mole needs to remind the pigeon to retrieve the intelligence through other means. In this method, neither party has any direct contact and neither knows the other's age, appearance, or hidden identity. The advantage is that the intelligence transmission is very secure. The disadvantage is that this method is relatively cumbersome, making it suitable for intelligence with low timeliness but unsuitable for transmitting urgent information.
They even used newspaper advertisements to transmit intelligence. The intelligence content was compiled into the published articles according to agreed-upon codes and order.
This method was widely used a few years ago; it's said that the underground Communist Party frequently used it to transmit intelligence. However, it's rarely used now.
Because this method is quite risky, everyone is now paying more attention to this aspect. Our military intelligence department has a special team to professionally review newspapers published in the market, and any suspicious information will be screened.
After listening, Ning Zhiheng realized that the knowledge involved in intelligence work was truly profound, with a wide variety of methods and techniques that were impossible to imagine without being involved.
"Is it possible that the mole has its own backup radio? Could it then send the intelligence directly to headquarters?" Ning Zhiheng thought of another more direct method and, unwilling to give up, continued to ask.
"That's also possible. According to our understanding of the Japanese intelligence organization, this situation is very rare."
This method has many drawbacks. As a mole, if someone can infiltrate and even obtain our classified information, then their identity must be that of an important member with access to classified information, and these people are extremely important to the spy organization.
Training such a spy comes at a very high cost. Any such intelligence agent is invaluable to an organization. They would not allow such a valuable agent to be subjected to unnecessary risks.
Because modern intelligence agencies have dedicated telecommunications departments that monitor various radio stations. For example, our military intelligence department has a relatively advanced telecommunications section.
If they intercept unfamiliar radio signals, they will investigate, determining the transmission frequency and location. Once a search is conducted, the radio station is easily exposed; sending telegrams is inherently dangerous and carries considerable risk.
Japanese spies were very meticulous in their work. They usually divided the work: moles gathered intelligence, and carrier pigeons delivered it. This way, the risk was shared between the two links, minimizing the possibility of exposure.
The underground Communist Party members uncovered by the Central Party Affairs Investigation Department last year were suspected of being undercover because a mole was directly sending a telegram. However, the mole decisively committed suicide by shooting himself, and ultimately nothing was found.
There are many other methods of intelligence transmission, and there is no fixed way; everything depends on the actual situation,” Huang Taoguang continued to explain.
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