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The CISO Decision Brief

First-Year Security Operating Calendar

Schedules recurring reviews, reporting, audits and renewals for the first year in role.

Available soon

Format
Excel
Size
73 KB
Length
12 sheets
Version
1.0
Updated

What's inside

What changed

  1. 1.0

    Published.

Changes across this pack

Preview

The workbook's sheets as you will receive them, with its example rows and the values its formulas calculate. Highlighted [[text]] is for you to replace; rows marked EXAMPLE are for you to delete. Wide sheets scroll sideways. The cover, document control and changelog sheets are in the file.

Instructions

How to use this workbook

StepWhat to do
1What this workbook is. It is the First-Year Security Operating Calendar of the CISO Transition, Handover & First 90 Days pack: the calendar the new head of security sets in week 13 (WK-40) for the first year in role. 24 items, CA-01 to CA-24, each in one of six areas: People, Risk, Controls, Incidents, Suppliers, Reporting. It schedules work that other documents set. It changes no interval, owner, decision right or clock that those documents set.
2Start on the Start and Reviews sheet. Enter your start date: your first day in the role, which is day 1. Month 1 is the month it falls in. The sheet then dates the reviews that TR-15 asks for, the start of week 13 and day 100 of the plan.
3Read the Calendar sheet. Each row is one item, with the document or rule that sets its timing, the interval it sets (Standard every, in months) and the month it first falls in (Standard first month). The twelve month columns show Due in each month the item falls in. The default timing already works. Change a month only where a date outside your control sets it.
4To move an item, change the yellow Every (months) and First month cells. Every is 1, 3, 6 or 12. First month is a whole number from 1 up to Every. Keep the interval the source sets: a change to the interval is a change to that document or rule, and goes through its own approval. The Moved column says so, and the item needs a reason in its Notes (CK-05).
5Name an owner for every item, by post. One person may own many items. An item with no owner is an item nobody will do (CK-03).
6Add your own items in the 10 blank rows under the standard ones: an ID of your own, the area, what happens, the document or rule that sets it, the interval and the first month. Keep the six areas covered (CK-06).
7On the Fixed Dates sheet, enter each date you cannot move and the item it belongs to. Take them from the handover (HD-11 lists "Every date due in the next 90 days: audits, reports, renewals, tests and regulator deadlines."), from the plan (PL-07: work due after day 100), from the board secretary (WK-17) and from your auditors and suppliers. The sheet says whether each date falls in a month its item is due.
8Read the Month by Month sheet. For each month it counts the items due, in total and by area, counts the fixed dates and names the items. The busiest and the quietest month show where the year is crowded. Where a month is crowded, you may move an item's first month within its interval. Say why in the Notes (CK-05). A count is not a score: a month with more items is busier, not worse.
9Read the Checks sheet. Each of the eight checks says Clear, Action needed or Nothing to check. Settle every Action needed before you take the calendar to the executive sponsor and, for the quarterly report, the management body.
10Review the calendar at the first anniversary, with the baseline (TR-15). Keep each version with the plan for [[3]] years, the P22 records period (TR-16), or longer where a contract or a law asks.

Legend

Yellow cells are inputs. Everything else is calculated or fixed — do not overwrite formulas.

EXAMPLERows marked EXAMPLE in the first column show how a completed row looks. Delete them before approval.

Limitations: This document helps a new head of security, and the one who is leaving, to hand over and take over a security function. It is not legal advice and not advice on employment. It does not say that you comply with NIS2 or any standard. What liability means for a member of a management body, what an outgoing leader may be asked to hand over under their contract, and whether your organisation is an essential or an important entity are for counsel to confirm.

The calendar is a schedule. Doing an item on its date does not show that the item works. Testing, review and reporting are done by the documents each item names. Incident clocks belong to P09 and are held in no row here.

The months are defaults. They count from the month you start, so month 1 is not January unless you start in January. A date that must fall on a calendar date, such as a filing, goes on the Fixed Dates sheet.

EXAMPLE: Kestrel Components B.V. (EXAMPLE), a manufacturer of industrial pumps and valves in an EU Member State, with about 600 staff and two plants. Its new head of security, Sam Okafor, started on 14 Sep 2026, so month 1 is September 2026. Its calendar uses the standard timings. Each of its 24 items has an owner, a post of the example organisation, as if the calendar were set in week 13 (the plan reaches the calendar then, WK-40). The owner check therefore says Clear. The Fixed Dates sheet holds the date of the first executive briefing and three dated examples: two board meetings and one internal audit window, each in a month its item is due.

Adapting this template:

• Small organisation: one person may own most items. Keep every area and every item you can run. If you cannot run an item at its interval, say so in its Notes and take the change through the document that sets the interval. Do not delete the row.

• Regulated organisation: add a row for each date that a regulator, a supervisor, an auditor or a customer's contract sets, and enter the date on the Fixed Dates sheet with its item. Counsel confirms whether a date binds you. This calendar holds no notification clock: those are in the incident documents (P09).

• Service provider or outsourced IT: where a managed service provider runs an item, such as an access review or a recovery test, the item stays on your calendar under your owner. Name the provider and the date it delivers in the Notes. The provider's report is evidence for your review. It does not replace it.

• Replace the [[placeholders]] with your own values. Keep the formulas.

This workbook is your own record. Keep a copy that can be reached when the main systems are down.

Start and Reviews

Start date and review dates

Enter your first day in the role. Everything on the other sheets counts from it: month 1 is the month it falls in, and day 1 is the day itself. Review this checklist, the discovery findings and the plan at day 30, day 60 and day 90, and the baseline and the calendar at the first anniversary. Record what changed and why.

Start date (day 1)14 Sep 2026EXAMPLE: Sam Okafor started on 14 Sep 2026. Enter your own date.
Month 11 Sep 2026
Month 121 Aug 2027

Review dates

ReviewDayDate (calc)What is reviewed, or doneRule
Review at day 303013 Oct 2026This checklist, the discovery findings and the planTR-15
Review at day 606012 Nov 2026This checklist, the discovery findings and the planTR-15
Review at day 909012 Dec 2026This checklist, the discovery findings and the planTR-15
Week 13 begins: set the calendar for the first year857 Dec 2026The calendar you are reading. Set it in week 13WK-40
Day 100 of the plan: later work comes here10022 Dec 2026Every plan item dropped or moved past day 100 and the reason, and the work due after itPL-07
First anniversary14 Sep 2027The baseline and this calendarTR-15, TR-12

Day 1 is the start date, so day 30 is the start date plus 29 days. The first anniversary is the start date plus 12 calendar months.

Weeks run 1 to 13 from day 1. Week 13 begins on day 85. The plan runs to day 100; work that moves past it comes to this calendar.

Calendar

One row for each recurring item. Yellow cells are yours; the others calculate. The month columns show Due in each month the item falls in, counted from the month you start. Standard values come from the documents named in the Source column.

Calendar month:1 Sep 20261 Oct 20261 Nov 20261 Dec 20261 Jan 20271 Feb 20271 Mar 20271 Apr 20271 May 20271 Jun 20271 Jul 20271 Aug 2027
RowItem IDAreaWhat happensSource: the document or rule that sets the timingStandard every (months)Standard first monthEvery (months)First monthTiming (calc)Moved from standard (calc)Month 1Month 2Month 3Month 4Month 5Month 6Month 7Month 8Month 9Month 10Month 11Month 12Times in the year (calc)Owner (a post)Notes: the reason for a move, and any date
StandardCA-01ReportingMonthly metrics to the security and IT leadership teamP11 MR-101111OKStandardDueDueDueDueDueDueDueDueDueDueDueDue12Head of Information Security
StandardCA-02ReportingMonthly security report to the executive committeeP11-A071111OKStandardDueDueDueDueDueDueDueDueDueDueDueDue12Head of Information Security
StandardCA-03ReportingQuarterly report to the management bodyP03 BR-013333OKStandardDueDueDueDue4Head of Information SecurityCadence as P03 sets it: quarterly.
StandardCA-04RiskRisk owners review their risksP05 RM-093232OKStandardDueDueDueDue4Head of Information Security
StandardCA-05RiskMonthly review of open exceptions and acceptancesP02-A031111OKStandardDueDueDueDueDueDueDueDueDueDueDueDue12Head of Information Security
StandardCA-06RiskReassess the whole risk registerP05 RM-0912101210OKStandardDue1Head of Information Security
StandardCA-07ControlsReview privileged and administrator accessP07 AR-023232OKStandardDueDueDueDue4Head of IT
StandardCA-08ControlsReview access to systems that support a critical serviceP07 AR-026464OKStandardDueDue2Head of IT
StandardCA-09ControlsReview access to all other in-scope systemsP07 AR-02128128OKStandardDue1Head of IT
StandardCA-10ControlsReview the Policy-tier documents and their registerP04 PF-06126126OKStandardDue1Head of Information Security
StandardCA-11ControlsApprove the annual control testing planP20-A09123123OKStandardDue1Head of Information Security
StandardCA-12IncidentsExercise the incident response planP09 IM-12125125OKStandardDue1Head of Information Security
StandardCA-13IncidentsCheck that every closed incident has had its reviewP09 IM-111111OKStandardDueDueDueDueDueDueDueDueDueDueDueDue12Head of Information Security
StandardCA-14IncidentsTest recovery of the critical servicesP22-A02129129OKStandardDue1Head of IT
StandardCA-15SuppliersReassess each Tier 1 supplierP06 TP-09124124OKStandardDue1Head of Information Security
StandardCA-16SuppliersConfirm critical supplier contacts and exit plansP06 TP-106666OKStandardDueDue2Head of Information Security
StandardCA-17SuppliersCheck the contract renewal dates for security suppliersP06 TP-123131OKStandardDueDueDueDue4General counsel
StandardCA-18PeopleTraining for the members of the management bodyP12 NR-05124124OKStandardDue1Head of HR
StandardCA-19PeopleAgree the annual awareness planP16 AW-03122122OKStandardDue1Head of HR
StandardCA-20PeopleReport policy currency and acknowledgement to managementP04 PF-123333OKStandardDueDueDueDue4Head of Information Security
StandardCA-21ReportingSelf-assess readiness for NIS2 and report the gapsP12 NR-086565OKStandardDueDue2Head of Information Security
StandardCA-22ReportingRun the maturity assessmentP19 MA-1712111211OKStandardDue1Head of Information Security
StandardCA-23ReportingRepeat the baseline and compare it with the firstP27-A1012121212OKStandardDue1Head of Information Security
StandardCA-24ReportingManagement review of the information security management system, where one exists (ISO/IEC 27001 clause 9.3)P08-A0912121212OKStandardDue1Chief executive

Month by Month

Month by month

For each month of the first year: the items due, in total and in each area, the fixed dates, and the items by ID. Counts only. A month with more items is busier. It is not worse.

The twelve months

MonthCalendar month (calc)Items due (calc)PeopleRiskControlsIncidentsSuppliersReportingFixed datesItems due, by ID (calc)
11 Sep 202650101120CA-01 CA-02 CA-05 CA-13 CA-17
21 Oct 202671211021CA-01 CA-02 CA-04 CA-05 CA-07 CA-13 CA-19
31 Nov 202671111031CA-01 CA-02 CA-03 CA-05 CA-11 CA-13 CA-20
41 Dec 202681111220CA-01 CA-02 CA-05 CA-08 CA-13 CA-15 CA-17 CA-18
51 Jan 202780212030CA-01 CA-02 CA-04 CA-05 CA-07 CA-12 CA-13 CA-21
61 Feb 202781111131CA-01 CA-02 CA-03 CA-05 CA-10 CA-13 CA-16 CA-20
71 Mar 202750101120CA-01 CA-02 CA-05 CA-13 CA-17
81 Apr 202770221021CA-01 CA-02 CA-04 CA-05 CA-07 CA-09 CA-13
91 May 202771102030CA-01 CA-02 CA-03 CA-05 CA-13 CA-14 CA-20
101 Jun 202770211120CA-01 CA-02 CA-05 CA-06 CA-08 CA-13 CA-17
111 Jul 202780211040CA-01 CA-02 CA-04 CA-05 CA-07 CA-13 CA-21 CA-22
121 Aug 202791101150CA-01 CA-02 CA-03 CA-05 CA-13 CA-16 CA-20 CA-23 CA-24

Where the year is crowded

MeasureItemsMonthCalendar month (calc)
Busiest month9121 Aug 2027
Quietest month511 Sep 2026
Items due in months 1 to 319
Times an item falls due in the year86

Busiest and quietest give the first month where two are level. Months 1 to 3 are the months of the first 90 days, counted by calendar month, not by day.

Fixed Dates

The dates you cannot move: a board meeting, an audit window, a renewal, a regulator's date. Name the calendar item each one belongs to. The check says whether the date falls in a month the item is due.

RowDateWhat happens on this dateWhere the date came fromCalendar item it belongs toMonth of the year (calc)Calendar month (calc)Check (calc)Notes
EXAMPLE30 Oct 2026First executive briefing, at the end of discoveryTR-13, IR-0121 Oct 2026No calendar itemA date in the plan. It is not a recurring item, so it names no calendar item.
EXAMPLE18 Nov 2026First quarterly report to the management body: the November board meetingWK-17, the board secretaryCA-0331 Nov 2026Due in that monthDate given by the board secretary (EXAMPLE).
EXAMPLE17 Feb 2027Second quarterly report to the management body: the February board meetingWK-17, the board secretaryCA-0361 Feb 2027Due in that monthDate given by the board secretary (EXAMPLE).
EXAMPLE14 Apr 2027Internal audit fieldwork on access reviews for the in-scope systemsIR-08, the internal audit leadCA-0981 Apr 2027Due in that monthDate in the internal audit plan (EXAMPLE). The access review is set to run just before it.

Checks

Checks

Eight checks on the calendar as typed. Each says Clear, Action needed or Nothing to check. Settle every Action needed before you take the calendar to the executive sponsor. Counts only.

The checks

CheckWhat it looks atResultOfStatus (calc)
CK-01The start date is entered on the Start and Reviews sheet.11Clear
CK-02Every calendar item has a timing that works: an interval of 1, 3, 6 or 12 months and a first month within its first interval.2424Clear
CK-03Every calendar item has an owner named. A [[placeholder]] does not count.2424Clear
CK-04Every calendar item names the document or rule that sets its timing. A [[placeholder]] does not count.2424Clear
CK-05Every item moved from its standard timing has a reason in its Notes.00Nothing to check
CK-06Each of the six areas has at least one item.66Clear
CK-07Every fixed date that names a calendar item falls in a month in which the item is due.33Clear
CK-08The repeat of the baseline (CA-23) is due once a year, in month 12.11Clear
Needing action08checks

The number of checks that need action is a count of work left. It is not a score. A calendar with none still needs your review.

Lists

ListAreaListEveryListItemID
People1CA-01
Risk3CA-02
Controls6CA-03
Incidents12CA-04
SuppliersCA-05
ReportingCA-06

CA-07

CA-08

CA-09

CA-10

CA-11

CA-12

CA-13

CA-14

CA-15

CA-16

CA-17

CA-18

CA-19

CA-20

CA-21

CA-22

CA-23

CA-24

Definitions

Definitions

TermMeaning in this workbook
Calendar itemOne recurring piece of work with an ID, an area, a source and a timing. CA-01 to CA-24 are the pack's. Add your own below them.
Standard timingThe interval and first month the source document or rule sets, as the pack records them. Shown in grey on the Calendar sheet. The workbook compares your timing with it.
Every (months)The interval between two occurrences of an item: 1 (monthly), 3 (quarterly), 6 (twice a year) or 12 (once a year).
First monthThe month of the year, counted from month 1, in which the item first falls. It is a whole number from 1 up to Every. An item that runs every 3 months and first falls in month 2 also falls in months 5, 8 and 11.
Month 1The calendar month of your start date, whichever day you start. Month 12 is eleven months later.
DueThe word a month column shows for an item that falls in that month. The word is the status. Colour only repeats it.
MovedAn item whose Every or First month differs from the standard. A moved item needs a reason in its Notes.
Fixed dateA date you cannot move, such as a board meeting, an audit, a renewal or a date a regulator sets. It belongs to a calendar item, and falls in a month in which that item is due.
OwnerThe post that sees that the item is done. One person may own many items.
SourceThe document or rule that sets the timing, by ID, such as P07 AR-02. The calendar copies it and never rewords it.
Start date and day 1The first day in the role. Day 1 is the start date itself, and every count of days and months in this workbook runs from it.
Executive sponsorThe executive the new leader reports to, who agrees the arrangement and the plan, and who speaks for the leader to the management body.
Management bodyThe board, or the equivalent, that NIS2 Article 20 says approves the cybersecurity risk-management measures and oversees their implementation.
AreaOne of six: People, Risk, Controls, Incidents, Suppliers, Reporting.
First anniversaryThe start date plus 12 calendar months. The baseline and this calendar are reviewed then (TR-15).
(calc)A column or cell the workbook calculates. Do not type or paste over it.
CA-nn, CK-nnCA-nn are the items of this calendar. CK-nn are its checks. TR-nn, WK-nn, HD-nn and PL-nn are the requirements, weekly actions, handover sections and plan rules of the First 90 Days Security Leader Checklist, the Security Function Handover Document and the 100-Day Security Plan. IDs such as P07 AR-02 are rules of the earlier pack named.
EXAMPLEA worked example: Kestrel Components B.V. (EXAMPLE), with a new head of security who started on 14 Sep 2026. Every name and value is made up. Delete before use.

Framework References

Framework references

These references indicate relevance only and do not reproduce the text of any standard.

FrameworkReferenceSupported by
ISO/IEC 27001:2022Clause 9.1 — Monitoring, measurement, analysis and evaluationCalendar and Month by Month sheets: when the programme is monitored and measured, and when the results are analysed and evaluated, across the first year
ISO/IEC 27001:2022Clause 9.3 — Management reviewCalendar sheet, row CA-24: the date of the management review, where an information security management system exists
NIST CSF 2.0GV.OV-03 — “Organizational cybersecurity risk management performance is evaluated and reviewed for adjustments needed”Calendar and Checks sheets: the dates on which the performance of the cybersecurity programme is evaluated and reviewed, and what adjusts
NIS2 — Directive (EU) 2022/2555Article 21(2)(f) — “policies and procedures to assess the effectiveness of cybersecurity risk-management measures”Calendar sheet, rows CA-04 to CA-06, CA-11, CA-14 and CA-21 to CA-23: the dates on which the effectiveness of the measures is assessed, tested and reported, each with an owner
NIS2 — Directive (EU) 2022/2555Article 21(2)(g) — “basic cyber hygiene practices and cybersecurity training”Calendar sheet, rows CA-18 to CA-20: the dates of training for the management body, of the awareness plan and of the report on policy acknowledgement

Editions referenced: Directive (EU) 2022/2555 (NIS2); NIST CSF 2.0; ISO/IEC 27001:2022 incl. Amd 1:2024 (by number and title only); UK NCSC board guidance and the ENISA skills framework, as their publishers state them; as published and read on 10 October 2026

ISO/IEC 27001 references name the clause or control this document relates to, by number and title only. No text of the standard is reproduced. A reference does not say that meeting a clause or control meets any requirement of NIS2, or that your organisation holds a certificate.

These references show where this document supports an external framework. They indicate relevance only and do not reproduce the text of any standard.

A reference says what its source asks of the management body or the organisation, and which CISO Times document helps with that work. It does not say that a document from this pack meets a requirement of NIS2.

Directive (EU) 2022/2555 is addressed to the Member States, and binds essential and important entities through their national law. Article 20 asks the Member States to ensure that the management body approves the cybersecurity risk-management measures, oversees their implementation, can be held liable for infringements of Article 21, and is required to follow training. What liability means for a member of a management body depends on national law, and counsel confirms it. Whether your organisation is an essential or an important entity comes from its scope assessment and from counsel, and this pack does not decide it.

Prepared by Zero One Cybersecurity · Published by CISO Times

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