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A recent security report states that it is possible to hijack sessions on Google Compute Engine virtual machines to gain root access through a DHCP attack. While deploying this attack is impractical, an exploit attempt can be highly functional.

The report, published on GitHub, mentions that a threat actor could allow threat actors to take control of virtual machines because these deployments rely on ISC DHCP software, which employs a very weak random number generator. A successful attack clutters these virtual machines with DHCP traffic, forcing the use of a fake metadata server controlled by an attacker.

If the attack is successful, the virtual machine uses the unauthorized server for its configuration instead of an official Google one, which would allow cybercriminals to log in to the affected device with root access.

Circa 2012


The idea that our universe is embedded in a broader multidimensional space has captured the imagination of scientists and the general population alike.

This notion is not entirely science fiction. According to some theories, our cosmos may exist in parallel with other universes in other sets of dimensions. Cosmologists call these universes braneworlds. And among that many prospects that this raises is the idea that things from our Universe might somehow end up in another.

A couple of years ago, Michael Sarrazin at the University of Namur in Belgium and a few others showed how matter might make the leap in the presence of large magnetic potentials. That provided a theoretical basis for real matter swapping.

In some cases, chain reactions fed more widespread disruption.

The Swedish Coop grocery store chain had to close hundreds of stores on Saturday because its cash registers are run by Visma Esscom, which manages servers for a number of Swedish businesses and in turn uses Kaseya.

Brett Callow, a ransomware expert at the cybersecurity firm Emsisoft, said he was unaware of any previous ransomware supply-chain attack on this scale.

The world’s animals and wildlife are becoming extinct at a greater rate than at any time in human history. Could technology help to save threatened species?

Read our latest technology quarterly on protecting biodiversity: https://econ.st/3dqdkKN

Listen to our Babbage podcast episode on the biodiversity crisis: https://econ.st/3dqfPww.

Sign up to The Economist’s daily newsletter to keep up to date with our latest stories: https://econ.st/3gJBH8D

Year after year, the explosive growth of computing power relies on manufacturers’ ability to fit more and more components into the same amount of space on a silicon chip. That progress, however, is now approaching the limits of the laws of physics, and new materials are being explored as potential replacements for the silicon semiconductors long at the heart of the computer industry.

New materials may also enable entirely new paradigms for individual chip components and their overall design. One long-promised advance is the ferroelectric field-effect transistor, or FE-FET. Such devices could switch states rapidly enough to perform computation, but also be able to hold those states without being powered, enabling them to function as long-term memory storage. Serving double duty as both RAM and ROM, FE-FET devices would make chips more space efficient and powerful.

The hurdle for making practical FE-FET devices has always been in manufacturing; the materials that best exhibit the necessary ferroelectric effect aren’t compatible with techniques for mass-producing silicon components due the high temperature requirements of the ferroelectric materials.