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NYDFS Part 500: 7 Fast Wins for the Nov 1, 2025 Deadline

#mfa #security #compliance #devops

Why this matters (engineer-first angle)

The final NYDFS Part 500 amendments are now live as of Nov 1, 2025. The big lift for most teams: expanded MFA and formal asset-inventory procedures. Below is a hands-on, developer-friendly sprint plan to close gaps quickly, generate examiner-ready artifacts, and align with Class A control expectations—without boiling the ocean.

NYDFS Part 500: 7 Fast Wins for the Nov 1, 2025 Deadline<br>

The 7 fast wins (with code + artifacts)

1) Build & normalize your asset inventory (systems, data, owners)

Create a single, queryable CSV of compute, databases, buckets, owners, and data classes. If you’re multi-cloud, start with the highest-risk account first.

Python (AWS) — inventory EC2/RDS/S3 with owner tags → CSV

# pip install boto3
import boto3, csv, os
from datetime import datetime

session = boto3.Session()  # or specify profile_name="prod"
ec2 = session.client("ec2")
rds = session.client("rds")
s3  = session.client("s3")

def get_tag(d, name):
    tags = d.get('Tags') or d.get('TagList') or []
    for t in tags:
        if t.get('Key') == name:
            return t.get('Value')
    return ""

ts = datetime.utcnow().strftime("%Y%m%d-%H%M%S")
out = f"inventory_aws_{ts}.csv"

with open(out, "w", newline="") as f:
    w = csv.writer(f)
    w.writerow(["provider","service","id","name","owner","env","data_class","region"])
    # EC2
    for r in session.get_available_regions("ec2"):
        ec2r = session.client("ec2", region_name=r)
        for rsv in ec2r.describe_instances().get("Reservations", []):
            for i in rsv.get("Instances", []):
                w.writerow(["aws","ec2", i["InstanceId"],
                            get_tag({"Tags": i.get("Tags", [])},"Name"),
                            get_tag({"Tags": i.get("Tags", [])},"Owner"),
                            get_tag({"Tags": i.get("Tags", [])},"Env"),
                            get_tag({"Tags": i.get("Tags", [])},"DataClass"),
                            r])
    # RDS
    for r in session.get_available_regions("rds"):
        rdsr = session.client("rds", region_name=r)
        for db in rdsr.describe_db_instances().get("DBInstances", []):
            arn = db["DBInstanceArn"]
            tags = rdsr.list_tags_for_resource(ResourceName=arn)["TagList"]
            w.writerow(["aws","rds", db["DBInstanceIdentifier"],
                        db.get("DBName",""),
                        get_tag({"TagList": tags},"Owner"),
                        get_tag({"TagList": tags},"Env"),
                        get_tag({"TagList": tags},"DataClass"),
                        r])
    # S3
    for b in s3.list_buckets().get("Buckets", []):
        name = b["Name"]
        loc = s3.get_bucket_location(Bucket=name).get("LocationConstraint") or "us-east-1"
        tags = []
        try:
            tags = s3.get_bucket_tagging(Bucket=name)["TagSet"]
        except s3.exceptions.from_code("NoSuchTagSet"):
            pass
        w.writerow(["aws","s3", name, name,
                    get_tag({"TagSet": tags},"Owner"),
                    get_tag({"TagSet": tags},"Env"),
                    get_tag({"TagSet": tags},"DataClass"),
                    loc])

print(f"Wrote {out}")
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Linux quick inventory (fallback)

# hostname, kernel, IPs, packages (Deb/RPM), running services
{ echo "host=$(hostname)"; uname -a; ip -o -4 addr show | awk '{print $2,$4}'; } > host.txt
if command -v dpkg >/dev/null; then dpkg -l > packages.txt; fi
if command -v rpm  >/dev/null; then rpm -qa --qf '%{NAME}-%{VERSION}\n' > packages.txt; fi
systemctl list-units --type=service --state=running > services.txt
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PowerShell (Windows endpoints/apps)

Get-ComputerInfo | Select-Object CsName, WindowsProductName, OsHardwareAbstractionLayer >> host.txt
Get-WmiObject -Class Win32_Product | Select Name, Version | Export-Csv installed_software.csv -NoTypeInformation
Get-LocalGroupMember -Group "Administrators" | Export-Csv local_admins.csv -NoTypeInformation
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Artifact to keep: the CSVs, raw command outputs, and your data classification map (e.g., DataClass=P1/P2/P3) per asset.

Free Website Vulnerability Scanner Tool Homepage (screenshot)

Screenshot of the free tools webpage where you can access security assessment tools.Screenshot of the free tools webpage where you can access security assessment tools.

2) Enforce universal MFA (risk-based exceptions documented)

Okta — verify org-wide MFA coverage for all sign-on rules

# Requires: OKTA_ORG, OKTA_TOKEN
curl -s -H "Authorization: SSWS $OKTA_TOKEN" \
  "$OKTA_ORG/api/v1/policies?type=OKTA_SIGN_ON" \
  | jq -r '.[] | .name as $p |
           .conditions.people.include[]? as $grp |
           "\($p),group:\($grp),mfa=" + ( .rules[]?.actions.signon.requireFactor|tostring )'
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  • Confirm every path eventually requires MFA.
  • Export JSON + a screenshot of each enforced rule (attach to evidence folder).

Microsoft Entra (Azure AD) — list Conditional Access MFA requirements

# Requires Microsoft.Graph modules and Connect-MgGraph
Get-MgConditionalAccessPolicy |
  Select-Object DisplayName, State,
    @{n="Users";e={$_.Conditions.Users}},
    @{n="Apps"; e={$_.Conditions.Applications}},
    @{n="GrantControls";e={$_.GrantControls}}
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  • Ensure at least one Enabled policy targeting All users/All cloud apps with Require multifactor authentication in GrantControls.

Artifact to keep: policy JSON exports + annual CISO-approved exceptions (with risk rationale & review date).

3) Lock down privileged access & break-glass

PowerShell — enumerate privileged roles (Windows/AD)

Get-LocalGroupMember -Group "Administrators"
Get-ADGroupMember -Identity "Domain Admins" -Recursive | Select Name, SamAccountName
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Linux — find sudoers with NOPASSWD

grep -R "NOPASSWD" /etc/sudoers /etc/sudoers.d || true
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Artifact to keep: export privileged users, show MFA on all break-glass accounts, and document the access review sign-off.

4) Class A quick checks: EDR + centralized logging are live

EDR presence — quick probe

# Linux/macOS examples
pgrep -fl falcon-sensor || echo "CrowdStrike not found"
pgrep -fl sentinel || echo "SentinelOne not found"
pgrep -fl ds_agent || echo "TrendMicro not found"
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# Windows services
Get-Service | Where-Object {$_.DisplayName -match "CrowdStrike|SentinelOne|Carbon Black|Defender"} |
  Select Status, DisplayName, ServiceName
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SIEM pipeline test (Splunk HEC)

# pip install requests
import os, requests, json, time
hec = os.getenv("SPLUNK_HEC")
url = os.getenv("SPLUNK_URL")  # e.g. https://splunk.example.com:8088/services/collector/event
event = {"event":{"type":"nydfs_test","msg":"ClassA alert test","ts":time.time()}}
r = requests.post(url, headers={"Authorization": f"Splunk {hec}"}, data=json.dumps(event), timeout=10)
print(r.status_code, r.text)
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  • Save the alert showing up in SIEM + runbook for on-call response and closure.

Artifact to keep: EDR health screenshots, SIEM event ID, search screenshot, and the runbook PDF.

5) Vulnerability & change-event scanning (external surface)

Run a fast check of your public domains before you open a change window:

Quick scan: → https://free.pentesttesting.com/
Attach the results to your remediation register (next step) and create tickets for items with external exposure.

Want deep coverage? See our Web App Penetration Testing Services for manual, evidence-driven testing aligned to OWASP/ASVS.

6) Standardize your remediation register (finding → control → owner → due date → retest)

Python — minimal remediation register you can import into Jira/Sheets

import csv, datetime
rows = [
  {"finding":"Public S3 bucket listing enabled",
   "control":"500.7 Access management / 500.15 Encryption",
   "owner":"cloud.ops",
   "due":"2025-11-15",
   "status":"Open",
   "evidence":"evidence/s3-hardening/bucket-policy.json"},
  {"finding":"MFA not enforced on break-glass",
   "control":"500.12 MFA",
   "owner":"iam.platform",
   "due":"2025-11-05",
   "status":"In Progress",
   "evidence":"evidence/mfa-exceptions/justification.docx"}
]
with open("remediation_register.csv","w",newline="") as f:
  w=csv.DictWriter(f,fieldnames=["finding","control","owner","due","status","evidence"])
  w.writeheader(); w.writerows(rows)
print("remediation_register.csv created")
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Pro tip: Link each row’s evidence path to screenshots, config exports, and the free scanner results you attached earlier.

7) Package “evidence that sticks”

Create a tidy, repeatable folder layout examiners love:

/evidence/
  /mfa/
    okta_policies.json
    entra_policies.json
    screenshots/
  /inventory/
    inventory_aws_YYYYMMDD.csv
    host.txt  packages.txt
  /classA/
    edr_status.txt
    siem_event.json
    runbook.pdf
  remediation_register.csv
  certification_draft_2025.docx
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Bash — auto-collect and hash artifacts for integrity

mkdir -p evidence/{mfa/integrations,inventory,classA/screenshots}
sha256sum $(find evidence -type f) > evidence/checksums.sha256
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Artifact to keep: the checksums file and a short readme.md describing how to regenerate everything.

Sample Report to check Website Vulnerability(screenshot)

Sample vulnerability assessment report generated with our free tool, providing insights into possible vulnerabilities.Sample vulnerability assessment report generated with our free tool, providing insights into possible vulnerabilities.

Related services (to accelerate your NYDFS sprint)

Further reading from our blog (recent)

Wrap Up:
If you’re racing the NYDFS Part 500 2025 deadline, our engineers can help you produce audit-ready evidence fast. Start with a quick external scan → https://free.pentesttesting.com/, then book a focused engagement via our Remediation Services or Web App Penetration Testing Services.

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