Rowhammer, the DRAM vulnerability that was supposedly fixed in DDR4 is not fixed in DDR4. The TRRespass attack shows that DIMMs from all 3 major vendors (good for 95% of the market) are still vulnerable. The news appeared in different international media (see the writeup on NakedSecurity) and in the Netherlands in de Volkskrant. There was a short interview on Radio 1 (22:51 h).