Encryption used in Apple's iMessage chat service has stymied attempts by federal drug enforcement agents to eavesdrop on suspects' conversations, an internal government document reveals.

An internal Drug Enforcement Administration document seen by CNET discusses a February 2013 criminal investigation and warns that because of the use of encryption, "it is impossible to intercept iMessages between two Apple devices" even with a court order approved by a federal judge.

Which brings us to the question of why, exactly, this sensitive law enforcement document leaked to a news outlet in the first place. It would be very strange, after all, for a cop to deliberately pass along information that could help drug dealers shield their communications from police. One reason might be to create support for the Justice Department’s longstanding campaign for legislation to require Internet providers to create backdoors ensuring police can read encrypted communications—even though in this case, the backdoor would appear to already exist.

The CNET article itself discusses this so-called “Going Dark” initiative. But another possible motive is to spread the very false impression that the article creates: That iMessages are somehow more difficult, if not impossible, for law enforcement to intercept. Criminals might then switch to using the iMessage service, which is no more immune to interception in reality, and actually provides police with far more useful data than traditional text messages can. If that’s what happened here, you have to admire the leaker’s ingenuity—but I’m inclined to think people are entitled to accurate information about the real level of security their communication enjoy.

Records of the prescription medications we take can reveal some of the most private and sensitive information about us. Knowing that a person self-administers prescription testosterone injections can reveal that he is a transgender man undergoing hormone replacement therapy. Knowing that someone takes Xanax, Valium, or other anti-anxiety medications can reveal a diagnosis of mental illness. If a person is on Marinol, a medication containing synthetic THC, she is likely fighting weight loss associated with AIDS. A prescription for a narcotic painkiller such as codeine or oxycodone might indicate a chronic or terminal illness. Ritalin and Adderall are associated with treatment of Attention Deficit Hyperactivity Disorder.

The State of Oregon sued the DEA in federal court to defend its right to require law enforcement, including federal agencies, to obtain the warrants required by state law. Today, the ACLU filed a motion to intervene in the case on behalf of several patients and a doctor whose prescription records are contained in the PDMP. Our clients are concerned that the privacy of their medical information will be violated if the DEA is allowed to search through prescription records without a warrant. If the DEA can demonstrate to a judge that it has probable cause to believe that a crime has been committed and that prescription records will provide evidence of that crime, then it can legitimately obtain records from the PDMP. Because prescription records and the medical information they reveal are such a sensitive matter, protecting their privacy is vital, and we argue that obtaining private and confidential prescription records without a warrant constitutes an unreasonable search in violation of the Fourth Amendment.

We disagree with this principle—but even on its own terms, the third party doctrine should not apply here. Medical records are different than the trash we put out on the curb, or the canceled checks we provide to our bank, or the electrical usage records we transmit to the power company. The information we share with our doctors and pharmacists can be some of our most private information. Just because we trust our doctors with our medical information doesn’t mean the DEA should be able to easily access it too.

Barbara Alice Mahaffey died of colon cancer in her bedroom last May. [Vernal, UT resident] Ben D. Mahaffey, 80, said he was distraught and trying to make sure his wife's body would be taken to the funeral home with dignity, when he says officers insisted he help them look for the drugs.

"I was holding her hand saying goodbye when all the intrusion happened," he told the Deseret News.

Barbara Mahaffey died at 12:35 a.m. with Mahaffey, a Navy medic in the Korean War, and his friend, an EMT, at her side. In addition to police, a mortician and a hospice worker arrived at the home about 12:45 a.m., Mahaffey said. He said he doesn't know how police came to be there.

Mahaffey said he was treated as if he were going to sell the painkillers, which included OxyContin, oxycodone and morphine, on the street.

In his suit, Mahaffey alleges that Vernal City Manager Ken Bassett told Mahaffey he was being "'overly sensitive' and that police were just trying to protect the public from illegal use of prescription drugs." The suit also alleges that Bassett then told Mahaffey "his own parents had recently died and he wouldn't have cared had police searched their house for drugs."

More than 400,000 documents and two terabytes of electronic data that federal authorities say is expensive to maintain....

[....] "Continued storage of these materials is difficult and expensive," wrote Stephanie Rose, the U.S. attorney for northern Iowa. She called the task "an economic and practical hardship" for the Drug Enforcement Administration....

[....] The evidence took up 5 percent of the DEA's worldwide electronic storage. Agents had also kept several hundred boxes of paper containing 440,000 documents, plus dozens of computers, servers and other bulky items.

Two terabytes is enough to store the text of 2 million novels, or roughly 625,000 copies of "War and Peace."

The revelations from this motion, if true, are amazing and appalling. Given the scope of electronic data involves in investigations, the claim that two terabytes constitutes five percent of the DEA's storage capacity is laughable. It suggests that they're screwing with us, and have no ability to do 90% of the things they claim or we fear they're up to.

Indeed, while we worry about their creating mirror images of hard drives of thousands of computers, or obtaining digital evidence from hundreds of thousands of cellphones, this isn't conceivably possible if the total storage capacity of the DEA is 40 terabytes. It just can't be.

FBI, Drug Enforcement Administration, and Royal Canadian Mounted Police officials have told industry representatives that IPv6 traceability is necessary to identify people suspected of crimes. The FBI has even suggested that a new law may be necessary if the private sector doesn't do enough voluntarily.

ARIN and the other regional registries maintain public Whois databases for IP addresses, meaning that if you type in 64.30.224.118, you can see that it's registered to CNET's publisher. ARIN tries to ensure that Internet providers keep their segments of the Whois database updated, and because it's been handing out IPv4 addresses blocks every few months, it currently enjoys enough leverage to insist on it.

But for IPv6, ARIN will be handing out much larger Internet address blocks only every 10 to 15 years, meaning it loses much of its ability to convince Internet providers to keep their Whois entries up-to-date. That means it may take law enforcement agencies -- presumably armed with court orders -- longer to trace an IPv6 address such as 2001:4860:4860::8888 back to an Internet service provider's customer.