The verdict is in. The detection of a cosmic neutrino that smashed into Earth with an unprecedented energy level is not a glitch or an error, but a real detection of a real particle.
In February 2023, a detector called KM3NeT, located deep under the Mediterranean Sea, picked up a signal that seemed to indicate a neutrino with a record-shattering energy of 220 petaelectronvolts (PeV). For reference, the previous record was a mere 10 PeV.
Now, an exhaustive analysis of all the data on and around the event, designated KM3-230213A, not only supports the conclusions that the signal was caused by a 220-PeV neutrino, but adds to the mystery about where the heck in the Universe it came from.
In 2023, astronomers recorded one of the most extraordinary space explosions they had ever seen.
It took place some 750 million light-years away, flaring into the detectors of the Zwicky Transient Facility on 7 July. At first, it looked just like a normal supernova – the explosive death of a star – and astronomers named it SN 2023zkd.
Six months later, a search for cosmic anomalies flagged the explosion as a little odd. A look back at data collected since its initial discovery revealed SN 2023zkd had done something really weird: it brightened again.
This attack is notable not least because it obviates the need for an attacker to send an RST_STREAM frame, thereby completely bypassing Rapid Reset mitigations, and also achieves the same impact as the latter.
In an advisory, the CERT Coordination Center (CERT/CC) said MadeYouReset exploits a mismatch caused by stream resets between HTTP/2 specifications and the internal architectures of many real-world web servers, resulting in resource exhaustion — something an attacker can exploit to induce a DoS attack.
