My name is Rich and I talk about technology and other nerdy things. Husband, Father, Tech Guy, CCIE 49450. #CiscoChampion

United States
Joined January 2012
A short clip from my IP subnetting video talking about how 16 million IP addresses were allocated. See the full video here: youtu.be/7hIbzlxbebc
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RichTechGuy retweeted
IPv4 has a problem, we're out of addresses, and we have been for some time. IPv6 offers the solution to this problem, so why are we still using IPv4? Take a look at my video on YouTube explaining IPv6, including why we are still using IPv4. Linked in the thread below. ⬇️
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Huntress: M365 campaign replayed post-MFA session tokens across 79 orgs (497 successful sign-ins). Attackers registered rogue Entra devices, swapped MFA, and hid inbox rules. Password reset alone isn’t enough—revoke sessions, audit devices/MFA/rules, tighten Conditional Access. thehackernews.com/2026/10/mi… #cybersecurity #identity
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IPv4 has a problem, we're out of addresses, and we have been for some time. IPv6 offers the solution to this problem, so why are we still using IPv4? Take a look at my video on YouTube explaining IPv6, including why we are still using IPv4. Linked in the thread below. ⬇️
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Today we lost Walter Koenig. Some thoughts about a fine actor and an exceptional human being...
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RIP Walter Koenig
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Arista patched CVE-2026-114625 (CVSS ~9.9) in on-prem VeloCloud Orchestrator: authenticated low-priv users can escalate to full operator via SQL injection. Active exploitation confirmed; hosted already fixed. Restrict VCO access and patch on-prem ASAP. bleepingcomputer.com/news/se… #cybersecurity #SDWAN
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PHP2Shell (CVE-2026-109618/109619): unauth RCE in PHP core. Emergency builds out; CISA: patch or offline. Amazon saw pre-disclosure attempt Oct 17 and broad exploitation after release. Inventory PHP, prioritize internet-facing, WAF is stopgap only. cisa.gov/news-events/alerts/… #cybersecurity
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OpenCode Console: legacy-system breach may have exposed third-party AI API keys for ~1.4% of linked Console users. Revoke/rotate OpenAI, Anthropic, Google keys at the provider—not only in the tool—and audit usage. thehackernews.com/2026/10/op… #AIsecurity
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Oct Windows Server security updates can break on-prem Exchange OWA/mail flow (Endpoint Mapper lookup limit under load). Not the Exchange CU itself—use Microsoft’s registry guidance; don’t yank Exchange security patches. bleepingcomputer.com/news/mi…
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ConnectWise Cloud Backup (ex-SkyKick) app identities were abused to sign into Microsoft 365 tenants as the trusted backup principal. Vendor disabled 7 app IDs and suspended the service; audit Entra service principals, role grants, and app secrets. bleepingcomputer.com/news/se… #cybersecurity #M365
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Cisco confirms active exploit of SEG CVE-2026-76519 (CVSS 9.8): unauth attacker emails a crafted attachment → arbitrary file write and root commands when AMP file reputation is on and scanner tools are outdated. Second SEG root issue since September. Patch/update scanner tools now. bleepingcomputer.com/news/se…
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Palo Alto patched PAN-OS CVE-2026-0322 (CVSS 8.6): authenticated RCE as root via management interface; limited live exploitation confirmed. Cloud NGFW/Prisma Access not affected. Lock down mgmt access to trusted IPs and patch ASAP. bleepingcomputer.com/news/se…
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