In other words, the cache reminds us that if your phone is hacked, the Signal or WhatsApp messages on it are not secure. This should not come as a surprise. If an intelligence agency, or a nosy sibling, can get you to install, say, a “key logger” on your phone, either one can bypass the encrypted communication app. But so can someone looking over your shoulder while you use your phone. That is about the vulnerability of your device. It has nothing to do with the security of the apps.

If anything in the WikiLeaks revelations is a bombshell, it is just how strong these encrypted apps appear to be. Since it doesn’t have a means of easy mass surveillance of such apps, the C.I.A. seems to have had to turn its attention to the harder and often high-risk task of breaking into individual devices one by one.

Which brings us to WikiLeaks’ misinformation campaign. An accurate tweet accompanying the cache would have said something like, “If the C.I.A. goes after your specific phone and hacks it, the agency can look at its content.” But that, of course, wouldn’t have caused alarm and defeatism about the prospects of secure conversations.

We’ve seen WikiLeaks do this before. Last July, right after the attempted coup in Turkey, WikiLeaks promised, with much fanfare, to release emails belonging to Turkey’s ruling Justice and Development Party. What WikiLeaks ultimately released, however, was nothing but mundane mailing lists of tens of thousands of ordinary people who discussed politics online. Back then, too, the ruse worked: Many Western journalists had hyped these non-leaks.

WikiLeaks seems to have a playbook for its disinformation campaigns. The first step is to dump many documents at once — rather than allowing journalists to scrutinize them and absorb their significance before publication. The second step is to sensationalize the material with misleading news releases and tweets. The third step is to sit back and watch as the news media unwittingly promotes the WikiLeaks agenda under the auspices of independent reporting.

The media, to its credit, eventually sorts things out — as it has belatedly started to do with the supposed C.I.A. cache. But by then, the initial burst of misinformation has spread. On social media in particular, the spin and distortion continues unabated. This time around, for example, there are widespread claims on social media that these leaked documents show that it was the C.I.A. that hacked the Democratic National Committee, and that it framed Russia for the hack. (The documents in the cache reveal nothing of the sort.)

As with most misinformation campaigns, the dust that is kicked up obscures concerns over a real issue. Device and information insecurity, overzealous surveillance by governments — these are real concerns that call for real attention. Yes, we need to have extensive and thoughtful discussion of these topics. But that’s not what the WikiLeaks misinformation campaign has given us.