# Talk:Row hammer

Hi. We should check, was TRR included to DDR4 standard or LPDDR4 standard...

Ref for LPDDR4 with TRR: http://www.memcon.com/pdfs/proceedings2014/MOB102.pdf "LPDDR4 DRAM requires controllers to do repair using Target row refresh mode (TRR)"
text of DDR4 without TRR: JESD79-4 sep2012 = www.softnology.biz/pdf/JESD79-4_DDR4_SDRAM.pdf
a5b (talk) 16:33, 9 January 2016 (UTC)

Hello!  That's a very good remark, went ahead and updated the article by clarifying and correcting the description of target row refresh (TRR) support in LPDDR4 and DDR4 products and related JEDEC standards, all that with additional references where required.  We should be covered now, if you agree. — Dsimic (talk | contribs) 05:00, 10 January 2016 (UTC)

"DRAM memory module" = Dynamic Random-Access Memory memory module. :-) But I ain't no native speaker, it's your language, maybe it's okay there. --grin ✎ 08:27, 1 September 2016 (UTC)

As a cheery update see this article: http://arstechnica.com/security/2016/08/new-attack-steals-private-crypto-keys-by-corrupting-data-in-computer-memory/  (references paper at usenix). It's getting even better as tests (though not really thorough ones) seem to show disappointing results for DDR4 and TRR. --grin ✎ 09:19, 1 September 2016 (UTC)