At The Edge Clear: June 01 - 08, 2026

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At The Edge is GreyNoise's weekly intelligence brief produced exclusively for customers incorporating complete IOCs, infrastructure attribution, detection guidance, and role-based recommendations. At The Edge Clear is a preview highlighting a couple insights and is available to the public.

The Pressure Was on Remote Access.

Analysis Period: June 01 – June 08, 2026

This week's highest-intent activity targeted the login surfaces of remote access — RDP, enterprise SSL VPN, and router management — not any new vulnerability. A single host produced more than a quarter of all RDP-crawling traffic GreyNoise observed: 4.18 million sessions in a 48-hour burst, then silence. Enterprise SSL VPN portals from every major vendor drew six-figure credential pressure, and a MikroTik RouterOS brute-force campaign ran for a third straight week. The actionable intelligence is the specific IPs, ASNs, and behavioral tags to hunt — not another hardening checklist.

By The Numbers:

  • 25% Of all RDP-crawling traffic this week came from a single host (4.18M sessions).
  • 6 Enterprise SSL VPN surfaces under six-figure credential and scanning pressure.
  • 1.5M MikroTik RouterOS brute-force sessions from two IPs, third week running.
  • 317M Total sessions across 1.55M source IPs, within the normal weekly range.

Preview Findings:

1. One Host, a Quarter of All RDP Crawling

94.102.49.82 (AS202425, Netherlands, malicious) generated 4,180,759 sessions — RDP Crawler 3.13M plus RDP Bruteforce 280K — more than a quarter of all RDP-crawling traffic GreyNoise recorded this week, across a wide port range, concentrated in a 48-hour burst then silent.

2. Enterprise SSL VPN Portals Under Credential Pressure

Fortinet (686K) and Cisco (401K) drew six-figure SSL VPN bruteforcing; SonicWall (325K login / 331K API), Cisco ASA (264K), and Palo Alto (255K) drew six-figure login and API scanning of the same portals. Apply GreyNoise dynamic blocklists for the Fortinet, Cisco, SonicWall, and Palo Alto login-scanner tags — the distributed source pattern makes tag-based blocking the primary lever.

3. MikroTik RouterOS Brute-Force — Third Week

Two hosts (45.198.224.18 NL, 45.205.1.5 BR) on TCP/8728 accounted for nearly all of the dataset's RouterOS brute-force sessions this week.

4. Rented Hosting Out-Rotates Reputation Feeds

Eight of the ten busiest sources are classified malicious and a ninth suspicious; all sit on rented hosting, mostly in the Netherlands. Apply GreyNoise dynamic blocklists for the relevant tags — the IPs rotate, the tag-based coverage does not.

Want the full brief?

GreyNoise customers get detailed briefs with complete IOCs, infrastructure attribution, detection guidance, and role-based recommendations every week.

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Read the transcript

At The Edge is GreyNoise's weekly intelligence brief produced exclusively for customers incorporating complete IOCs, infrastructure attribution, detection guidance, and role-based recommendations. At The Edge Clear is a preview highlighting a couple insights and is available to the public.

The Pressure Was on Remote Access.

Analysis Period: June 01 – June 08, 2026

This week's highest-intent activity targeted the login surfaces of remote access — RDP, enterprise SSL VPN, and router management — not any new vulnerability. A single host produced more than a quarter of all RDP-crawling traffic GreyNoise observed: 4.18 million sessions in a 48-hour burst, then silence. Enterprise SSL VPN portals from every major vendor drew six-figure credential pressure, and a MikroTik RouterOS brute-force campaign ran for a third straight week. The actionable intelligence is the specific IPs, ASNs, and behavioral tags to hunt — not another hardening checklist.

By The Numbers:

  • 25% Of all RDP-crawling traffic this week came from a single host (4.18M sessions).
  • 6 Enterprise SSL VPN surfaces under six-figure credential and scanning pressure.
  • 1.5M MikroTik RouterOS brute-force sessions from two IPs, third week running.
  • 317M Total sessions across 1.55M source IPs, within the normal weekly range.

Preview Findings:

1. One Host, a Quarter of All RDP Crawling

94.102.49.82 (AS202425, Netherlands, malicious) generated 4,180,759 sessions — RDP Crawler 3.13M plus RDP Bruteforce 280K — more than a quarter of all RDP-crawling traffic GreyNoise recorded this week, across a wide port range, concentrated in a 48-hour burst then silent.

2. Enterprise SSL VPN Portals Under Credential Pressure

Fortinet (686K) and Cisco (401K) drew six-figure SSL VPN bruteforcing; SonicWall (325K login / 331K API), Cisco ASA (264K), and Palo Alto (255K) drew six-figure login and API scanning of the same portals. Apply GreyNoise dynamic blocklists for the Fortinet, Cisco, SonicWall, and Palo Alto login-scanner tags — the distributed source pattern makes tag-based blocking the primary lever.

3. MikroTik RouterOS Brute-Force — Third Week

Two hosts (45.198.224.18 NL, 45.205.1.5 BR) on TCP/8728 accounted for nearly all of the dataset's RouterOS brute-force sessions this week.

4. Rented Hosting Out-Rotates Reputation Feeds

Eight of the ten busiest sources are classified malicious and a ninth suspicious; all sit on rented hosting, mostly in the Netherlands. Apply GreyNoise dynamic blocklists for the relevant tags — the IPs rotate, the tag-based coverage does not.

Want the full brief?

GreyNoise customers get detailed briefs with complete IOCs, infrastructure attribution, detection guidance, and role-based recommendations every week.

Request a demo to learn more about GreyNoise's data and intelligence.