We take a look at a few exciting features coming to Linux kernel 5.6, including the first steps to multipath TCP. Plus the latest Intel speculative execution vulnerability, and Microsoft's troubled history with certificate renewal. Links: Oregon company makes top bid for Microsoft check - CNET Microsoft’s failures to renew: Teams, Hotmail, and Hotmail.co.uk | Ars Technica Microsoft Teams goes down after Microsoft forgot to renew a certificate - The Verge Browser review: Microsoft’s new “Edgium” Chromium-based Edge | Ars Technica Linus Torvalds pulled WireGuard VPN into the 5.6 kernel source tree | Ars Technica Ubuntu 20.04 LTS Adds WireGuard Support - Phoronix Multipath TCP Support Is Working Its Upstream - First Bits Landing With Linux 5.6 - Phoronix MultiPath TCP - Linux Kernel implementation Upstreaming multipath TCP LPC2019 - Multipath TCP Upstreaming - YouTube LPC2019 - Multipath TCP Upstreaming - Slides LPC2019 - Multipath TCP Upstreaming - Paper Using MultiPath TCP to enhance home networks Linux 5.6 Crypto Getting AVX/AVX2/AVX-512 Optimized Poly1305Poly1305CacheOut CacheOut PaperIntel Responds to ZombieLoad and CacheOut Attacks | Tom's Hardware New CacheOut Attack Targets Intel CPUs, Leaks Data From VMs And Secure Enclave