Day: March 17, 2016

Posted on

Even researchers agree that slow internet can stress you out

You’re not the only one who gets frustrated when videos buffer too much and too often. Ericsson found that the stress caused by trying to load videos on a slow mobile connection is comparable to the stress you feel while watching a horror movie. The Swedish company discovered that when it conducted an experiment called "The Stress of Streaming Delays." Sure, Ericsson did it to show brands how slow internet affects them, and it’s true it only had 30 subjects. But we don’t think anyone would disagree that having to endure several seconds to minutes of buffering is frustrating.

Ericsson’s researchers, who measured the subjects’ brain, pulse and heart activities while they were performing tasks on a phone, found that video streaming delays increase heart rate by 38 percent. They also found that a two-second buffering period can double stress levels. When the researchers observed the subjects who were subjected to longer delays (around six seconds), though, they saw their stress levels rise, then fall. The participants showed signs of resignation, including eye movements that indicated distraction — they were already giving up.

We’ll bet that’s a feeling you only know too well. It’s like where you’re pumped to watch the next episode of a series on Netflix/Hulu/YouTube, and it buffers so much, you end up losing interest. The company published its results, which you can view as a PDF right here. It’s a pretty short read for a study if you want to know more about its methodologies… or if you need something to do while the movie you’re watching is buffering.

Via: New York Mag

Source: Ericsson (1), (2)

from Engadget http://ift.tt/1pMLugc
via IFTTT

Posted on

A dangerous piece of PC ransomware is now impossible to crack

What do developers do after discovering a software vulnerability? Why, patch it, of course. Ironically, criminals have learned that lesson too, as one gang has updated the notorious TeslaCrypt ransomware with new features that are impossible to crack, according to Cisco’s Talos security arm. That means user infected with the latest version (3.01) of the malware can no longer use white hat-engineered software to get their files back. Until someone finds a new solution — and that seems unlikely — victims will have to pay.

Companies like Kaspersky and Cisco’s Talos have reverse-engineered various pieces of ransomware, helping corporate clients and anyone else rescue files without paying. The security community has also developed better detection and distribution disruption methods for the scourge. According to Talos, "this has lead adversaries to iterating and improving upon the previous release of TeslaCrypt."

We can not say it loud and often enough, ransomware has become the black plague of the internet, spread by highly sophisticated exploit kits and countless spam campaigns.

Previously, it stored the private key needed to unlock files on your own machine. However, after generating the key locally, TeslaCrypt 3.01 transfers it to the bad guy’s server and deletes it from your PC. As a result, "the private key never has to leave the [attacker’s] server and the ransomware uses a different key for each victim," according to Talos. With the 256-bit key nowhere to be found and impossible to brute force, the only way you can get your files is to pay.

"We can not say it loud and often enough, ransomware has become the black plague of the internet, spread by highly sophisticated exploit kits and countless spam campaigns," Talos says. Attackers are going after bigger targets that can afford to pay more, with potentially catastrophic consequences, as we saw at a Hollywood hospital. The best defense is to back up your files, but even that might not help. The FBI recently said that "in a new scheme, cyber criminals attempt to infect whole networks with ransomware and use persistent access to locate and delete network backups."

Via: PC World

Source: Cisco Talos

from Engadget http://ift.tt/22p3yLy
via IFTTT