From what I read, there was of course, some of the more traditional honeypot going on but Wolf determined that things like blackmail were "a fools errand" and that they could obtain better intel from the women who were in daily contact with not only documents, but private calls and conversations.

"He also believed that the most valuable secrets would not necessarily be obtained from the men in positions of power, who might have only a limited insight into the machinery of government around them, but rather from the women who did the unglamorous work in the background: the secretaries, telephonists and filing clerks. Frequently young, single or unhappily married, underpaid and overqualified, these women could provide a bewildering array of documents and office chitchat."

It is sad that these tactics were so effective because there was so much missing in their lives.